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Finding the Third Proportional to 74,131 and 111,837

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Solution

The third proportional to 74,131 and 111,837 is: 168,721.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,131 : 111,837 = 111,837 : x
  2. Step 2: Convert to fraction form
    74,131/111,837 = 111,837/x
  3. Step 3: Cross multiply
    74,131x = 111,837 × 111,837
  4. Step 4: Simplify right side
    74,131x = 12,507,514,569
  5. Step 5: Solve for x
    x = 12,507,514,569/74,131
  6. Step 6: Final answer
    x = 168,721.78

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.