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Finding the Fourth Proportional to 220,169.72, 303,834.21 and 124,694.87

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Solution

The fourth proportional to 220,169.72, 303,834.21 and 124,694.87 is: 172,078.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,169.72 : 303,834.21 = 124,694.87 : x
  2. Step 2: Convert to fraction form
    220,169.72/303,834.21 = 124,694.87/x
  3. Step 3: Cross multiply
    220,169.72x = 303,834.21 × 124,694.87
  4. Step 4: Simplify right side
    220,169.72x = 37,886,566,470.10
  5. Step 5: Solve for x
    x = 37,886,566,470.10/220,169.72
  6. Step 6: Final answer
    x = 172,078.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.