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Finding the Third Proportional to 80,748,342 and 177,129,900

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Solution

The third proportional to 80,748,342 and 177,129,900 is: 388,552,887.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,748,342 : 177,129,900 = 177,129,900 : x
  2. Step 2: Convert to fraction form
    80,748,342/177,129,900 = 177,129,900/x
  3. Step 3: Cross multiply
    80,748,342x = 177,129,900 × 177,129,900
  4. Step 4: Simplify right side
    80,748,342x = 31,375,001,474,010,000
  5. Step 5: Solve for x
    x = 31,375,001,474,010,000/80,748,342
  6. Step 6: Final answer
    x = 388,552,887.86

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.