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Finding the Fourth Proportional to 218,103.86, 327,179.25 and 91,756.97

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Solution

The fourth proportional to 218,103.86, 327,179.25 and 91,756.97 is: 137,645.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,103.86 : 327,179.25 = 91,756.97 : x
  2. Step 2: Convert to fraction form
    218,103.86/327,179.25 = 91,756.97/x
  3. Step 3: Cross multiply
    218,103.86x = 327,179.25 × 91,756.97
  4. Step 4: Simplify right side
    218,103.86x = 30,020,976,626.87
  5. Step 5: Solve for x
    x = 30,020,976,626.87/218,103.86
  6. Step 6: Final answer
    x = 137,645.32

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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.