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Finding the Third Proportional to 81,508.50 and 115,422.75

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Solution

The third proportional to 81,508.50 and 115,422.75 is: 163,448.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,508.50 : 115,422.75 = 115,422.75 : x
  2. Step 2: Convert to fraction form
    81,508.50/115,422.75 = 115,422.75/x
  3. Step 3: Cross multiply
    81,508.50x = 115,422.75 × 115,422.75
  4. Step 4: Simplify right side
    81,508.50x = 13,322,411,217.56
  5. Step 5: Solve for x
    x = 13,322,411,217.56/81,508.50
  6. Step 6: Final answer
    x = 163,448.12

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.