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Finding the Third Proportional to 91,755 and 129,210.75

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Solution

The third proportional to 91,755 and 129,210.75 is: 181,956.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,755 : 129,210.75 = 129,210.75 : x
  2. Step 2: Convert to fraction form
    91,755/129,210.75 = 129,210.75/x
  3. Step 3: Cross multiply
    91,755x = 129,210.75 × 129,210.75
  4. Step 4: Simplify right side
    91,755x = 16,695,417,915.56
  5. Step 5: Solve for x
    x = 16,695,417,915.56/91,755
  6. Step 6: Final answer
    x = 181,956.49

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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.