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Finding the Fourth Proportional to 109,481.82, 151,125.85 and 85,234.74

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Solution

The fourth proportional to 109,481.82, 151,125.85 and 85,234.74 is: 117,655.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,481.82 : 151,125.85 = 85,234.74 : x
  2. Step 2: Convert to fraction form
    109,481.82/151,125.85 = 85,234.74/x
  3. Step 3: Cross multiply
    109,481.82x = 151,125.85 × 85,234.74
  4. Step 4: Simplify right side
    109,481.82x = 12,881,172,532.03
  5. Step 5: Solve for x
    x = 12,881,172,532.03/109,481.82
  6. Step 6: Final answer
    x = 117,655.81

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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.