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Finding the Third Proportional to 81,398 and 126,024

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Solution

The third proportional to 81,398 and 126,024 is: 195,115.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,398 : 126,024 = 126,024 : x
  2. Step 2: Convert to fraction form
    81,398/126,024 = 126,024/x
  3. Step 3: Cross multiply
    81,398x = 126,024 × 126,024
  4. Step 4: Simplify right side
    81,398x = 15,882,048,576
  5. Step 5: Solve for x
    x = 15,882,048,576/81,398
  6. Step 6: Final answer
    x = 195,115.96

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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.