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Finding the Third Proportional to 71,344 and 168,720

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Solution

The third proportional to 71,344 and 168,720 is: 399,002.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,344 : 168,720 = 168,720 : x
  2. Step 2: Convert to fraction form
    71,344/168,720 = 168,720/x
  3. Step 3: Cross multiply
    71,344x = 168,720 × 168,720
  4. Step 4: Simplify right side
    71,344x = 28,466,438,400
  5. Step 5: Solve for x
    x = 28,466,438,400/71,344
  6. Step 6: Final answer
    x = 399,002.56

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.