Home / 80,109.24-120,164.12-30,175.92

Finding the Fourth Proportional to 80,109.24, 120,164.12 and 30,175.92

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Solution

The fourth proportional to 80,109.24, 120,164.12 and 30,175.92 is: 45,263.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,109.24 : 120,164.12 = 30,175.92 : x
  2. Step 2: Convert to fraction form
    80,109.24/120,164.12 = 30,175.92/x
  3. Step 3: Cross multiply
    80,109.24x = 120,164.12 × 30,175.92
  4. Step 4: Simplify right side
    80,109.24x = 3,626,062,721.11
  5. Step 5: Solve for x
    x = 3,626,062,721.11/80,109.24
  6. Step 6: Final answer
    x = 45,263.98

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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.