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Finding the Third Proportional to 69,839.75 and 108,119

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Solution

The third proportional to 69,839.75 and 108,119 is: 167,379.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,839.75 : 108,119 = 108,119 : x
  2. Step 2: Convert to fraction form
    69,839.75/108,119 = 108,119/x
  3. Step 3: Cross multiply
    69,839.75x = 108,119 × 108,119
  4. Step 4: Simplify right side
    69,839.75x = 11,689,718,161
  5. Step 5: Solve for x
    x = 11,689,718,161/69,839.75
  6. Step 6: Final answer
    x = 167,379.15

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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.