Home / 83,823.20-125,880.60-81,198.80

Finding the Fourth Proportional to 83,823.20, 125,880.60 and 81,198.80

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Solution

The fourth proportional to 83,823.20, 125,880.60 and 81,198.80 is: 121,939.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,823.20 : 125,880.60 = 81,198.80 : x
  2. Step 2: Convert to fraction form
    83,823.20/125,880.60 = 81,198.80/x
  3. Step 3: Cross multiply
    83,823.20x = 125,880.60 × 81,198.80
  4. Step 4: Simplify right side
    83,823.20x = 10,221,353,663.28
  5. Step 5: Solve for x
    x = 10,221,353,663.28/83,823.20
  6. Step 6: Final answer
    x = 121,939.44

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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.