Home / 128,339.85-192,542.58-49,432.89

Finding the Fourth Proportional to 128,339.85, 192,542.58 and 49,432.89

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Solution

The fourth proportional to 128,339.85, 192,542.58 and 49,432.89 is: 74,161.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,339.85 : 192,542.58 = 49,432.89 : x
  2. Step 2: Convert to fraction form
    128,339.85/192,542.58 = 49,432.89/x
  3. Step 3: Cross multiply
    128,339.85x = 192,542.58 × 49,432.89
  4. Step 4: Simplify right side
    128,339.85x = 9,517,936,177.46
  5. Step 5: Solve for x
    x = 9,517,936,177.46/128,339.85
  6. Step 6: Final answer
    x = 74,161.97

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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.