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Finding the Third Proportional to 81,332.88 and 121,520.75

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Solution

The third proportional to 81,332.88 and 121,520.75 is: 181,566.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,332.88 : 121,520.75 = 121,520.75 : x
  2. Step 2: Convert to fraction form
    81,332.88/121,520.75 = 121,520.75/x
  3. Step 3: Cross multiply
    81,332.88x = 121,520.75 × 121,520.75
  4. Step 4: Simplify right side
    81,332.88x = 14,767,292,680.56
  5. Step 5: Solve for x
    x = 14,767,292,680.56/81,332.88
  6. Step 6: Final answer
    x = 181,566.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.