4.21 is what percent of 134.28 - 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 134.28 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 134.28, so we can write it down as 100%=134.28.
4. We know, that x% equals 4.21 of the output value, so we can write it down as x%=4.21.
5. Now we have two simple equations:
1) 100%=134.28
2) x%=4.21
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%=134.28/4.21
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 4.21 is what percent of 134.28

100%/x%=134.28/4.21
(100/x)*x=(134.28/4.21)*x       - we multiply both sides of the equation by x
100=31.895486935867*x       - we divide both sides of the equation by (31.895486935867) to get x
100/31.895486935867=x
3.1352397974382=x
x=3.1352397974382

now we have:
4.21 is 3.1352397974382% of 134.28