Home / 192,864.08-289,342.31-80,481.78

Finding the Fourth Proportional to 192,864.08, 289,342.31 and 80,481.78

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Solution

The fourth proportional to 192,864.08, 289,342.31 and 80,481.78 is: 120,741.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,864.08 : 289,342.31 = 80,481.78 : x
  2. Step 2: Convert to fraction form
    192,864.08/289,342.31 = 80,481.78/x
  3. Step 3: Cross multiply
    192,864.08x = 289,342.31 × 80,481.78
  4. Step 4: Simplify right side
    192,864.08x = 23,286,783,735.70
  5. Step 5: Solve for x
    x = 23,286,783,735.70/192,864.08
  6. Step 6: Final answer
    x = 120,741.95

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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.