Home / 148,105.12-204,384.22-80,121.90

Finding the Fourth Proportional to 148,105.12, 204,384.22 and 80,121.90

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Solution

The fourth proportional to 148,105.12, 204,384.22 and 80,121.90 is: 110,567.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,105.12 : 204,384.22 = 80,121.90 : x
  2. Step 2: Convert to fraction form
    148,105.12/204,384.22 = 80,121.90/x
  3. Step 3: Cross multiply
    148,105.12x = 204,384.22 × 80,121.90
  4. Step 4: Simplify right side
    148,105.12x = 16,375,652,036.42
  5. Step 5: Solve for x
    x = 16,375,652,036.42/148,105.12
  6. Step 6: Final answer
    x = 110,567.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.