Home / 394,081.88-591,205.96-127,821.72

Finding the Fourth Proportional to 394,081.88, 591,205.96 and 127,821.72

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Solution

The fourth proportional to 394,081.88, 591,205.96 and 127,821.72 is: 191,759.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,081.88 : 591,205.96 = 127,821.72 : x
  2. Step 2: Convert to fraction form
    394,081.88/591,205.96 = 127,821.72/x
  3. Step 3: Cross multiply
    394,081.88x = 591,205.96 × 127,821.72
  4. Step 4: Simplify right side
    394,081.88x = 75,568,962,681.45
  5. Step 5: Solve for x
    x = 75,568,962,681.45/394,081.88
  6. Step 6: Final answer
    x = 191,759.55

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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.