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Finding the Third Proportional to 108,874 and 168,243

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Solution

The third proportional to 108,874 and 168,243 is: 259,985.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,874 : 168,243 = 168,243 : x
  2. Step 2: Convert to fraction form
    108,874/168,243 = 168,243/x
  3. Step 3: Cross multiply
    108,874x = 168,243 × 168,243
  4. Step 4: Simplify right side
    108,874x = 28,305,707,049
  5. Step 5: Solve for x
    x = 28,305,707,049/108,874
  6. Step 6: Final answer
    x = 259,985.92

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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.