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Finding the Fourth Proportional to 183,491.92, 274,879.38 and 126,431.28

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Solution

The fourth proportional to 183,491.92, 274,879.38 and 126,431.28 is: 189,399.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,491.92 : 274,879.38 = 126,431.28 : x
  2. Step 2: Convert to fraction form
    183,491.92/274,879.38 = 126,431.28/x
  3. Step 3: Cross multiply
    183,491.92x = 274,879.38 × 126,431.28
  4. Step 4: Simplify right side
    183,491.92x = 34,753,351,859.01
  5. Step 5: Solve for x
    x = 34,753,351,859.01/183,491.92
  6. Step 6: Final answer
    x = 189,399.90

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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.