Home / 83,139.20-124,708.80-49,961.60

Finding the Fourth Proportional to 83,139.20, 124,708.80 and 49,961.60

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Solution

The fourth proportional to 83,139.20, 124,708.80 and 49,961.60 is: 74,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,139.20 : 124,708.80 = 49,961.60 : x
  2. Step 2: Convert to fraction form
    83,139.20/124,708.80 = 49,961.60/x
  3. Step 3: Cross multiply
    83,139.20x = 124,708.80 × 49,961.60
  4. Step 4: Simplify right side
    83,139.20x = 6,230,651,182.08
  5. Step 5: Solve for x
    x = 6,230,651,182.08/83,139.20
  6. Step 6: Final answer
    x = 74,942.40

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1.5x scale

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.