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Finding the Fourth Proportional to 192,863.87, 289,341.98 and 80,481.56

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Solution

The fourth proportional to 192,863.87, 289,341.98 and 80,481.56 is: 120,741.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,863.87 : 289,341.98 = 80,481.56 : x
  2. Step 2: Convert to fraction form
    192,863.87/289,341.98 = 80,481.56/x
  3. Step 3: Cross multiply
    192,863.87x = 289,341.98 × 80,481.56
  4. Step 4: Simplify right side
    192,863.87x = 23,286,693,923.89
  5. Step 5: Solve for x
    x = 23,286,693,923.89/192,863.87
  6. Step 6: Final answer
    x = 120,741.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.