Home / 80,126.19-120,196.13-20,961.77

Finding the Fourth Proportional to 80,126.19, 120,196.13 and 20,961.77

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Solution

The fourth proportional to 80,126.19, 120,196.13 and 20,961.77 is: 31,444.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,126.19 : 120,196.13 = 20,961.77 : x
  2. Step 2: Convert to fraction form
    80,126.19/120,196.13 = 20,961.77/x
  3. Step 3: Cross multiply
    80,126.19x = 120,196.13 × 20,961.77
  4. Step 4: Simplify right side
    80,126.19x = 2,519,522,926.16
  5. Step 5: Solve for x
    x = 2,519,522,926.16/80,126.19
  6. Step 6: Final answer
    x = 31,444.44

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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.