Home / 80,110.46-120,155.27-20,950.70

Finding the Fourth Proportional to 80,110.46, 120,155.27 and 20,950.70

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Solution

The fourth proportional to 80,110.46, 120,155.27 and 20,950.70 is: 31,423.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,110.46 : 120,155.27 = 20,950.70 : x
  2. Step 2: Convert to fraction form
    80,110.46/120,155.27 = 20,950.70/x
  3. Step 3: Cross multiply
    80,110.46x = 120,155.27 × 20,950.70
  4. Step 4: Simplify right side
    80,110.46x = 2,517,336,309.66
  5. Step 5: Solve for x
    x = 2,517,336,309.66/80,110.46
  6. Step 6: Final answer
    x = 31,423.32

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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.