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Finding the Third Proportional to 71,712 and 155,520

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Solution

The third proportional to 71,712 and 155,520 is: 337,272.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,712 : 155,520 = 155,520 : x
  2. Step 2: Convert to fraction form
    71,712/155,520 = 155,520/x
  3. Step 3: Cross multiply
    71,712x = 155,520 × 155,520
  4. Step 4: Simplify right side
    71,712x = 24,186,470,400
  5. Step 5: Solve for x
    x = 24,186,470,400/71,712
  6. Step 6: Final answer
    x = 337,272.29

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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.