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Finding the Third Proportional to 89,209.50 and 121,508.75

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Solution

The third proportional to 89,209.50 and 121,508.75 is: 165,502.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,209.50 : 121,508.75 = 121,508.75 : x
  2. Step 2: Convert to fraction form
    89,209.50/121,508.75 = 121,508.75/x
  3. Step 3: Cross multiply
    89,209.50x = 121,508.75 × 121,508.75
  4. Step 4: Simplify right side
    89,209.50x = 14,764,376,326.56
  5. Step 5: Solve for x
    x = 14,764,376,326.56/89,209.50
  6. Step 6: Final answer
    x = 165,502.29

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.