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Finding the Fourth Proportional to 149,482.92, 206,286.38 and 81,499.95

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Solution

The fourth proportional to 149,482.92, 206,286.38 and 81,499.95 is: 112,469.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,482.92 : 206,286.38 = 81,499.95 : x
  2. Step 2: Convert to fraction form
    149,482.92/206,286.38 = 81,499.95/x
  3. Step 3: Cross multiply
    149,482.92x = 206,286.38 × 81,499.95
  4. Step 4: Simplify right side
    149,482.92x = 16,812,329,655.68
  5. Step 5: Solve for x
    x = 16,812,329,655.68/149,482.92
  6. Step 6: Final answer
    x = 112,469.90

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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.