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Finding the Third Proportional to 71,369 and 156,861

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Solution

The third proportional to 71,369 and 156,861 is: 344,762.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,369 : 156,861 = 156,861 : x
  2. Step 2: Convert to fraction form
    71,369/156,861 = 156,861/x
  3. Step 3: Cross multiply
    71,369x = 156,861 × 156,861
  4. Step 4: Simplify right side
    71,369x = 24,605,373,321
  5. Step 5: Solve for x
    x = 24,605,373,321/71,369
  6. Step 6: Final answer
    x = 344,762.76

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.