Home / 129,091.14-193,712.50-54,205.52

Finding the Fourth Proportional to 129,091.14, 193,712.50 and 54,205.52

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Solution

The fourth proportional to 129,091.14, 193,712.50 and 54,205.52 is: 81,340.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,091.14 : 193,712.50 = 54,205.52 : x
  2. Step 2: Convert to fraction form
    129,091.14/193,712.50 = 54,205.52/x
  3. Step 3: Cross multiply
    129,091.14x = 193,712.50 × 54,205.52
  4. Step 4: Simplify right side
    129,091.14x = 10,500,286,793
  5. Step 5: Solve for x
    x = 10,500,286,793/129,091.14
  6. Step 6: Final answer
    x = 81,340.10

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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.