Home / 83,893.20-125,839.80-80,005.20

Finding the Fourth Proportional to 83,893.20, 125,839.80 and 80,005.20

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Solution

The fourth proportional to 83,893.20, 125,839.80 and 80,005.20 is: 120,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,893.20 : 125,839.80 = 80,005.20 : x
  2. Step 2: Convert to fraction form
    83,893.20/125,839.80 = 80,005.20/x
  3. Step 3: Cross multiply
    83,893.20x = 125,839.80 × 80,005.20
  4. Step 4: Simplify right side
    83,893.20x = 10,067,838,366.96
  5. Step 5: Solve for x
    x = 10,067,838,366.96/83,893.20
  6. Step 6: Final answer
    x = 120,007.80

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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.