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Finding the Fourth Proportional to 203,367.48, 280,663.92 and 112,751.87

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Solution

The fourth proportional to 203,367.48, 280,663.92 and 112,751.87 is: 155,606.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,367.48 : 280,663.92 = 112,751.87 : x
  2. Step 2: Convert to fraction form
    203,367.48/280,663.92 = 112,751.87/x
  3. Step 3: Cross multiply
    203,367.48x = 280,663.92 × 112,751.87
  4. Step 4: Simplify right side
    203,367.48x = 31,645,380,418.21
  5. Step 5: Solve for x
    x = 31,645,380,418.21/203,367.48
  6. Step 6: Final answer
    x = 155,606.89

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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.