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Finding the Fourth Proportional to 181,959.28, 273,081.78 and 126,190.78

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Solution

The fourth proportional to 181,959.28, 273,081.78 and 126,190.78 is: 189,385.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,959.28 : 273,081.78 = 126,190.78 : x
  2. Step 2: Convert to fraction form
    181,959.28/273,081.78 = 126,190.78/x
  3. Step 3: Cross multiply
    181,959.28x = 273,081.78 × 126,190.78
  4. Step 4: Simplify right side
    181,959.28x = 34,460,402,139.28
  5. Step 5: Solve for x
    x = 34,460,402,139.28/181,959.28
  6. Step 6: Final answer
    x = 189,385.24

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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.