Finding the Fourth Proportional to 128,385,319.48, 177,156,793.92 and 71,873,159.92
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Solution
The fourth proportional to 128,385,319.48, 177,156,793.92 and 71,873,159.92 is: 99,176,593.02
Step by Step Solution
- Step 1: Write the proportion equation
128,385,319.48 : 177,156,793.92 = 71,873,159.92 : x - Step 2: Convert to fraction form
128,385,319.48/177,156,793.92 = 71,873,159.92/x - Step 3: Cross multiply
128,385,319.48x = 177,156,793.92 × 71,873,159.92 - Step 4: Simplify right side
128,385,319.48x = 12,732,818,580,326,644 - Step 5: Solve for x
x = 12,732,818,580,326,644/128,385,319.48 - Step 6: Final answer
x = 99,176,593.02
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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.