Home / 80,115.04-120,153.90-30,200.12

Finding the Fourth Proportional to 80,115.04, 120,153.90 and 30,200.12

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Solution

The fourth proportional to 80,115.04, 120,153.90 and 30,200.12 is: 45,293.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,115.04 : 120,153.90 = 30,200.12 : x
  2. Step 2: Convert to fraction form
    80,115.04/120,153.90 = 30,200.12/x
  3. Step 3: Cross multiply
    80,115.04x = 120,153.90 × 30,200.12
  4. Step 4: Simplify right side
    80,115.04x = 3,628,662,198.47
  5. Step 5: Solve for x
    x = 3,628,662,198.47/80,115.04
  6. Step 6: Final answer
    x = 45,293.15

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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.