Home / 83,046.20-124,439.70-71,900.60

Finding the Fourth Proportional to 83,046.20, 124,439.70 and 71,900.60

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Solution

The fourth proportional to 83,046.20, 124,439.70 and 71,900.60 is: 107,738.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,046.20 : 124,439.70 = 71,900.60 : x
  2. Step 2: Convert to fraction form
    83,046.20/124,439.70 = 71,900.60/x
  3. Step 3: Cross multiply
    83,046.20x = 124,439.70 × 71,900.60
  4. Step 4: Simplify right side
    83,046.20x = 8,947,289,093.82
  5. Step 5: Solve for x
    x = 8,947,289,093.82/83,046.20
  6. Step 6: Final answer
    x = 107,738.69

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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.