Finding the Fourth Proportional to 121,619,581.62, 167,832,948.39 and 65,864,550.18
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Solution
The fourth proportional to 121,619,581.62, 167,832,948.39 and 65,864,550.18 is: 90,891,955.92
Step by Step Solution
- Step 1: Write the proportion equation
121,619,581.62 : 167,832,948.39 = 65,864,550.18 : x - Step 2: Convert to fraction form
121,619,581.62/167,832,948.39 = 65,864,550.18/x - Step 3: Cross multiply
121,619,581.62x = 167,832,948.39 × 65,864,550.18 - Step 4: Simplify right side
121,619,581.62x = 11,054,241,651,090,504 - Step 5: Solve for x
x = 11,054,241,651,090,504/121,619,581.62 - Step 6: Final answer
x = 90,891,955.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.