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Finding the Third Proportional to 85,910 and 129,024

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Solution

The third proportional to 85,910 and 129,024 is: 193,774.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,910 : 129,024 = 129,024 : x
  2. Step 2: Convert to fraction form
    85,910/129,024 = 129,024/x
  3. Step 3: Cross multiply
    85,910x = 129,024 × 129,024
  4. Step 4: Simplify right side
    85,910x = 16,647,192,576
  5. Step 5: Solve for x
    x = 16,647,192,576/85,910
  6. Step 6: Final answer
    x = 193,774.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.