Home / 80,131.55-120,256.38-38,011.76

Finding the Fourth Proportional to 80,131.55, 120,256.38 and 38,011.76

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Solution

The fourth proportional to 80,131.55, 120,256.38 and 38,011.76 is: 57,045.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,131.55 : 120,256.38 = 38,011.76 : x
  2. Step 2: Convert to fraction form
    80,131.55/120,256.38 = 38,011.76/x
  3. Step 3: Cross multiply
    80,131.55x = 120,256.38 × 38,011.76
  4. Step 4: Simplify right side
    80,131.55x = 4,571,156,655.03
  5. Step 5: Solve for x
    x = 4,571,156,655.03/80,131.55
  6. Step 6: Final answer
    x = 57,045.65

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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.