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Finding the Fourth Proportional to 123,879.26, 170,957.52 and 72,882.92

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Solution

The fourth proportional to 123,879.26, 170,957.52 and 72,882.92 is: 100,580.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,879.26 : 170,957.52 = 72,882.92 : x
  2. Step 2: Convert to fraction form
    123,879.26/170,957.52 = 72,882.92/x
  3. Step 3: Cross multiply
    123,879.26x = 170,957.52 × 72,882.92
  4. Step 4: Simplify right side
    123,879.26x = 12,459,883,253.56
  5. Step 5: Solve for x
    x = 12,459,883,253.56/123,879.26
  6. Step 6: Final answer
    x = 100,580.87

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1.5x scale

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.