Home / 80,021.04-120,031.20-75,149.20

Finding the Fourth Proportional to 80,021.04, 120,031.20 and 75,149.20

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Solution

The fourth proportional to 80,021.04, 120,031.20 and 75,149.20 is: 112,723.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,021.04 : 120,031.20 = 75,149.20 : x
  2. Step 2: Convert to fraction form
    80,021.04/120,031.20 = 75,149.20/x
  3. Step 3: Cross multiply
    80,021.04x = 120,031.20 × 75,149.20
  4. Step 4: Simplify right side
    80,021.04x = 9,020,248,655.04
  5. Step 5: Solve for x
    x = 9,020,248,655.04/80,021.04
  6. Step 6: Final answer
    x = 112,723.46

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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.