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Finding the Third Proportional to 81,898 and 120,161

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Solution

The third proportional to 81,898 and 120,161 is: 176,300.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,898 : 120,161 = 120,161 : x
  2. Step 2: Convert to fraction form
    81,898/120,161 = 120,161/x
  3. Step 3: Cross multiply
    81,898x = 120,161 × 120,161
  4. Step 4: Simplify right side
    81,898x = 14,438,665,921
  5. Step 5: Solve for x
    x = 14,438,665,921/81,898
  6. Step 6: Final answer
    x = 176,300.59

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.