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Finding the Third Proportional to 83,138 and 124,379

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Solution

The third proportional to 83,138 and 124,379 is: 186,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,138 : 124,379 = 124,379 : x
  2. Step 2: Convert to fraction form
    83,138/124,379 = 124,379/x
  3. Step 3: Cross multiply
    83,138x = 124,379 × 124,379
  4. Step 4: Simplify right side
    83,138x = 15,470,135,641
  5. Step 5: Solve for x
    x = 15,470,135,641/83,138
  6. Step 6: Final answer
    x = 186,077.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.