Home / 83,890.20-125,835.30-80,002.20

Finding the Fourth Proportional to 83,890.20, 125,835.30 and 80,002.20

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Solution

The fourth proportional to 83,890.20, 125,835.30 and 80,002.20 is: 120,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,890.20 : 125,835.30 = 80,002.20 : x
  2. Step 2: Convert to fraction form
    83,890.20/125,835.30 = 80,002.20/x
  3. Step 3: Cross multiply
    83,890.20x = 125,835.30 × 80,002.20
  4. Step 4: Simplify right side
    83,890.20x = 10,067,100,837.66
  5. Step 5: Solve for x
    x = 10,067,100,837.66/83,890.20
  6. Step 6: Final answer
    x = 120,003.30

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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.