Home / 80,119.50-120,170.07-20,960.88

Finding the Fourth Proportional to 80,119.50, 120,170.07 and 20,960.88

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Solution

The fourth proportional to 80,119.50, 120,170.07 and 20,960.88 is: 31,438.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,119.50 : 120,170.07 = 20,960.88 : x
  2. Step 2: Convert to fraction form
    80,119.50/120,170.07 = 20,960.88/x
  3. Step 3: Cross multiply
    80,119.50x = 120,170.07 × 20,960.88
  4. Step 4: Simplify right side
    80,119.50x = 2,518,870,312.06
  5. Step 5: Solve for x
    x = 2,518,870,312.06/80,119.50
  6. Step 6: Final answer
    x = 31,438.92

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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.