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Finding the Third Proportional to 73,920 and 131,424

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Solution

The third proportional to 73,920 and 131,424 is: 233,661.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,920 : 131,424 = 131,424 : x
  2. Step 2: Convert to fraction form
    73,920/131,424 = 131,424/x
  3. Step 3: Cross multiply
    73,920x = 131,424 × 131,424
  4. Step 4: Simplify right side
    73,920x = 17,272,267,776
  5. Step 5: Solve for x
    x = 17,272,267,776/73,920
  6. Step 6: Final answer
    x = 233,661.63

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.