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Finding the Fourth Proportional to 203,115.56, 280,298.76 and 113,691.56

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Solution

The fourth proportional to 203,115.56, 280,298.76 and 113,691.56 is: 156,893.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,115.56 : 280,298.76 = 113,691.56 : x
  2. Step 2: Convert to fraction form
    203,115.56/280,298.76 = 113,691.56/x
  3. Step 3: Cross multiply
    203,115.56x = 280,298.76 × 113,691.56
  4. Step 4: Simplify right side
    203,115.56x = 31,867,603,290.47
  5. Step 5: Solve for x
    x = 31,867,603,290.47/203,115.56
  6. Step 6: Final answer
    x = 156,893.95

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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.