Finding the Fourth Proportional to 128,521,102.83, 177,357,306 and 72,765,084.54
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Solution
The fourth proportional to 128,521,102.83, 177,357,306 and 72,765,084.54 is: 100,414,788.55
Step by Step Solution
- Step 1: Write the proportion equation
128,521,102.83 : 177,357,306 = 72,765,084.54 : x - Step 2: Convert to fraction form
128,521,102.83/177,357,306 = 72,765,084.54/x - Step 3: Cross multiply
128,521,102.83x = 177,357,306 × 72,765,084.54 - Step 4: Simplify right side
128,521,102.83x = 12,905,419,364,876,650 - Step 5: Solve for x
x = 12,905,419,364,876,650/128,521,102.83 - Step 6: Final answer
x = 100,414,788.55
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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.