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Finding the Third Proportional to 81,729.75 and 126,604.13

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Solution

The third proportional to 81,729.75 and 126,604.13 is: 196,117.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,729.75 : 126,604.13 = 126,604.13 : x
  2. Step 2: Convert to fraction form
    81,729.75/126,604.13 = 126,604.13/x
  3. Step 3: Cross multiply
    81,729.75x = 126,604.13 × 126,604.13
  4. Step 4: Simplify right side
    81,729.75x = 16,028,604,467.02
  5. Step 5: Solve for x
    x = 16,028,604,467.02/81,729.75
  6. Step 6: Final answer
    x = 196,117.14

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.