How to determine a proportion of $15,\ 45,\ 40,\ 120$.
Given: Numbers $15,\ 45,\ 40,\ 120$.
To do: To determine the proportion of $15,\ 45,\ 40,\ 120$.
Solution:
We have $15,\ 45,\ 40,\ 120$.
Therefore, ratio of $15$ and $45=\frac{15}{45}=\frac{1}{3}=1:3$
Ratio of $40$ and $120=\frac{40}{120}=\frac{1}{3}=1:3$
Thus, $15:45::40:120$.
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