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Finding the Third Proportional to 71,439 and 155,181

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Solution

The third proportional to 71,439 and 155,181 is: 337,086.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,439 : 155,181 = 155,181 : x
  2. Step 2: Convert to fraction form
    71,439/155,181 = 155,181/x
  3. Step 3: Cross multiply
    71,439x = 155,181 × 155,181
  4. Step 4: Simplify right side
    71,439x = 24,081,142,761
  5. Step 5: Solve for x
    x = 24,081,142,761/71,439
  6. Step 6: Final answer
    x = 337,086.78

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.