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Finding the Third Proportional to 61,188 and 129,717

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Solution

The third proportional to 61,188 and 129,717 is: 274,996.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,188 : 129,717 = 129,717 : x
  2. Step 2: Convert to fraction form
    61,188/129,717 = 129,717/x
  3. Step 3: Cross multiply
    61,188x = 129,717 × 129,717
  4. Step 4: Simplify right side
    61,188x = 16,826,500,089
  5. Step 5: Solve for x
    x = 16,826,500,089/61,188
  6. Step 6: Final answer
    x = 274,996.73

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.