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Finding the Third Proportional to 129,388 and 193,542

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Solution

The third proportional to 129,388 and 193,542 is: 289,505.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,388 : 193,542 = 193,542 : x
  2. Step 2: Convert to fraction form
    129,388/193,542 = 193,542/x
  3. Step 3: Cross multiply
    129,388x = 193,542 × 193,542
  4. Step 4: Simplify right side
    129,388x = 37,458,505,764
  5. Step 5: Solve for x
    x = 37,458,505,764/129,388
  6. Step 6: Final answer
    x = 289,505.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.