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Finding the Third Proportional to 71,932 and 112,839

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Solution

The third proportional to 71,932 and 112,839 is: 177,009.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,932 : 112,839 = 112,839 : x
  2. Step 2: Convert to fraction form
    71,932/112,839 = 112,839/x
  3. Step 3: Cross multiply
    71,932x = 112,839 × 112,839
  4. Step 4: Simplify right side
    71,932x = 12,732,639,921
  5. Step 5: Solve for x
    x = 12,732,639,921/71,932
  6. Step 6: Final answer
    x = 177,009.40

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.