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Finding the Third Proportional to 71,917 and 156,955

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Solution

The third proportional to 71,917 and 156,955 is: 342,545.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,917 : 156,955 = 156,955 : x
  2. Step 2: Convert to fraction form
    71,917/156,955 = 156,955/x
  3. Step 3: Cross multiply
    71,917x = 156,955 × 156,955
  4. Step 4: Simplify right side
    71,917x = 24,634,872,025
  5. Step 5: Solve for x
    x = 24,634,872,025/71,917
  6. Step 6: Final answer
    x = 342,545.88

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.