Finding the Fourth Proportional to 115,639,457.12, 159,618,184.76 and 74,386,349.49
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Solution
The fourth proportional to 115,639,457.12, 159,618,184.76 and 74,386,349.49 is: 102,676,148.54
Step by Step Solution
- Step 1: Write the proportion equation
115,639,457.12 : 159,618,184.76 = 74,386,349.49 : x - Step 2: Convert to fraction form
115,639,457.12/159,618,184.76 = 74,386,349.49/x - Step 3: Cross multiply
115,639,457.12x = 159,618,184.76 × 74,386,349.49 - Step 4: Simplify right side
115,639,457.12x = 11,873,414,076,144,818 - Step 5: Solve for x
x = 11,873,414,076,144,818/115,639,457.12 - Step 6: Final answer
x = 102,676,148.54
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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.