Identify a pattern and find the next number in the pattern -0.8,-3.2,-12.8,-51.2

 -0.8,-3.2,-12.8,-51.2 in this patteren -0.4 multiply by 4 we get -3.2 if we multiply -3.2 by 4 we get -12.8 so in this patteren times number by 4 to get the next number so the new number is  -204,8
Hope this helps

The answer would be $68.04