142.8 is what percent of 448 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 448 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 448, so we can write it down as 100%=448.
4. We know, that x% equals 142.8 of the output value, so we can write it down as x%=142.8.
5. Now we have two simple equations:
1) 100%=448
2) x%=142.8
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=448/142.8
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 142.8 is what percent of 448

100%/x%=448/142.8
(100/x)*x=(448/142.8)*x       - we multiply both sides of the equation by x
100=3.1372549019608*x       - we divide both sides of the equation by (3.1372549019608) to get x
100/3.1372549019608=x
31.875=x
x=31.875

now we have:
142.8 is 31.875% of 448