Finding the Fourth Proportional to 128,385,354.72, 177,156,842.49 and 71,873,195.16
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Solution
The fourth proportional to 128,385,354.72, 177,156,842.49 and 71,873,195.16 is: 99,176,641.62
Step by Step Solution
- Step 1: Write the proportion equation
128,385,354.72 : 177,156,842.49 = 71,873,195.16 : x - Step 2: Convert to fraction form
128,385,354.72/177,156,842.49 = 71,873,195.16/x - Step 3: Cross multiply
128,385,354.72x = 177,156,842.49 × 71,873,195.16 - Step 4: Simplify right side
128,385,354.72x = 12,732,828,314,213,150 - Step 5: Solve for x
x = 12,732,828,314,213,150/128,385,354.72 - Step 6: Final answer
x = 99,176,641.62
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.