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Finding the Third Proportional to 91,806 and 129,288

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Solution

The third proportional to 91,806 and 129,288 is: 182,072.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,806 : 129,288 = 129,288 : x
  2. Step 2: Convert to fraction form
    91,806/129,288 = 129,288/x
  3. Step 3: Cross multiply
    91,806x = 129,288 × 129,288
  4. Step 4: Simplify right side
    91,806x = 16,715,386,944
  5. Step 5: Solve for x
    x = 16,715,386,944/91,806
  6. Step 6: Final answer
    x = 182,072.92

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.