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Finding the Third Proportional to 80,724 and 125,991

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Solution

The third proportional to 80,724 and 125,991 is: 196,642.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,724 : 125,991 = 125,991 : x
  2. Step 2: Convert to fraction form
    80,724/125,991 = 125,991/x
  3. Step 3: Cross multiply
    80,724x = 125,991 × 125,991
  4. Step 4: Simplify right side
    80,724x = 15,873,732,081
  5. Step 5: Solve for x
    x = 15,873,732,081/80,724
  6. Step 6: Final answer
    x = 196,642.04

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.