How to fetch nearby places with distance in laravel

I am trying to fetch nearby by places in mexico but results I am getting is wrong. Here is the situation

$request->latitude = 19.7059504;
$request->longitude = -101.1949825;

 $provider= Provider::query();
       $provider          =       $provider->select("*", DB::raw("6371 * acos(cos(radians(" . $request->latitude . "))
       * cos(radians(latitude)) * cos(radians(longitude) - radians(" . $request->longitude . "))
       + sin(radians(" .$request->latitude. ")) * sin(radians(latitude))) AS distance "));
        $provider =  $provider->orderBy('distance', 'asc');
        $provider = $provider->get();
        return response()->json($provider);

I have one record in database which has longitude and latitude.

longitude = -99.1519086;
latitude = 19.3924815;

I have checked on google map .which is displaying 369 KM distance . but on my side it is showing 11481.61 KM .

Where i am doing worng . Does this result is in KM?

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