Finding the Fourth Proportional to 115,639,477.68, 159,618,213.06 and 74,386,370.07
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Solution
The fourth proportional to 115,639,477.68, 159,618,213.06 and 74,386,370.07 is: 102,676,176.90
Step by Step Solution
- Step 1: Write the proportion equation
115,639,477.68 : 159,618,213.06 = 74,386,370.07 : x - Step 2: Convert to fraction form
115,639,477.68/159,618,213.06 = 74,386,370.07/x - Step 3: Cross multiply
115,639,477.68x = 159,618,213.06 × 74,386,370.07 - Step 4: Simplify right side
115,639,477.68x = 11,873,419,466,593,266 - Step 5: Solve for x
x = 11,873,419,466,593,266/115,639,477.68 - Step 6: Final answer
x = 102,676,176.90
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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.