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Finding the Fourth Proportional to 181,380.38, 250,309.17 and 100,811.30

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Solution

The fourth proportional to 181,380.38, 250,309.17 and 100,811.30 is: 139,121.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,380.38 : 250,309.17 = 100,811.30 : x
  2. Step 2: Convert to fraction form
    181,380.38/250,309.17 = 100,811.30/x
  3. Step 3: Cross multiply
    181,380.38x = 250,309.17 × 100,811.30
  4. Step 4: Simplify right side
    181,380.38x = 25,233,991,578.08
  5. Step 5: Solve for x
    x = 25,233,991,578.08/181,380.38
  6. Step 6: Final answer
    x = 139,121.95

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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.