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Finding the Third Proportional to 108,787 and 168,800

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Solution

The third proportional to 108,787 and 168,800 is: 261,919.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,787 : 168,800 = 168,800 : x
  2. Step 2: Convert to fraction form
    108,787/168,800 = 168,800/x
  3. Step 3: Cross multiply
    108,787x = 168,800 × 168,800
  4. Step 4: Simplify right side
    108,787x = 28,493,440,000
  5. Step 5: Solve for x
    x = 28,493,440,000/108,787
  6. Step 6: Final answer
    x = 261,919.53

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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.