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Finding the Third Proportional to 79,661 and 122,277

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Solution

The third proportional to 79,661 and 122,277 is: 187,691.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,661 : 122,277 = 122,277 : x
  2. Step 2: Convert to fraction form
    79,661/122,277 = 122,277/x
  3. Step 3: Cross multiply
    79,661x = 122,277 × 122,277
  4. Step 4: Simplify right side
    79,661x = 14,951,664,729
  5. Step 5: Solve for x
    x = 14,951,664,729/79,661
  6. Step 6: Final answer
    x = 187,691.15

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.