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Finding the Third Proportional to 85,418 and 136,026

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Solution

The third proportional to 85,418 and 136,026 is: 216,617.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,418 : 136,026 = 136,026 : x
  2. Step 2: Convert to fraction form
    85,418/136,026 = 136,026/x
  3. Step 3: Cross multiply
    85,418x = 136,026 × 136,026
  4. Step 4: Simplify right side
    85,418x = 18,503,072,676
  5. Step 5: Solve for x
    x = 18,503,072,676/85,418
  6. Step 6: Final answer
    x = 216,617.96

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.