Home / 80,186.24-120,148.02-42,706.52

Finding the Fourth Proportional to 80,186.24, 120,148.02 and 42,706.52

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Solution

The fourth proportional to 80,186.24, 120,148.02 and 42,706.52 is: 63,989.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,186.24 : 120,148.02 = 42,706.52 : x
  2. Step 2: Convert to fraction form
    80,186.24/120,148.02 = 42,706.52/x
  3. Step 3: Cross multiply
    80,186.24x = 120,148.02 × 42,706.52
  4. Step 4: Simplify right side
    80,186.24x = 5,131,103,819.09
  5. Step 5: Solve for x
    x = 5,131,103,819.09/80,186.24
  6. Step 6: Final answer
    x = 63,989.83

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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.