Home / 80,137.28-120,205.92-30,854.72

Finding the Fourth Proportional to 80,137.28, 120,205.92 and 30,854.72

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Solution

The fourth proportional to 80,137.28, 120,205.92 and 30,854.72 is: 46,282.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,137.28 : 120,205.92 = 30,854.72 : x
  2. Step 2: Convert to fraction form
    80,137.28/120,205.92 = 30,854.72/x
  3. Step 3: Cross multiply
    80,137.28x = 120,205.92 × 30,854.72
  4. Step 4: Simplify right side
    80,137.28x = 3,708,920,003.94
  5. Step 5: Solve for x
    x = 3,708,920,003.94/80,137.28
  6. Step 6: Final answer
    x = 46,282.08

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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.