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Finding the Third Proportional to 87,319 and 142,734

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Solution

The third proportional to 87,319 and 142,734 is: 233,316.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,319 : 142,734 = 142,734 : x
  2. Step 2: Convert to fraction form
    87,319/142,734 = 142,734/x
  3. Step 3: Cross multiply
    87,319x = 142,734 × 142,734
  4. Step 4: Simplify right side
    87,319x = 20,372,994,756
  5. Step 5: Solve for x
    x = 20,372,994,756/87,319
  6. Step 6: Final answer
    x = 233,316.86

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.