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Finding the Fourth Proportional to 203,587.92, 280,951.64 and 112,943.88

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Solution

The fourth proportional to 203,587.92, 280,951.64 and 112,943.88 is: 155,862.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,587.92 : 280,951.64 = 112,943.88 : x
  2. Step 2: Convert to fraction form
    203,587.92/280,951.64 = 112,943.88/x
  3. Step 3: Cross multiply
    203,587.92x = 280,951.64 × 112,943.88
  4. Step 4: Simplify right side
    203,587.92x = 31,731,768,313.96
  5. Step 5: Solve for x
    x = 31,731,768,313.96/203,587.92
  6. Step 6: Final answer
    x = 155,862.73

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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.