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Finding the Third Proportional to 61,722 and 132,921

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Solution

The third proportional to 61,722 and 132,921 is: 286,251.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,722 : 132,921 = 132,921 : x
  2. Step 2: Convert to fraction form
    61,722/132,921 = 132,921/x
  3. Step 3: Cross multiply
    61,722x = 132,921 × 132,921
  4. Step 4: Simplify right side
    61,722x = 17,667,992,241
  5. Step 5: Solve for x
    x = 17,667,992,241/61,722
  6. Step 6: Final answer
    x = 286,251.13

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.