Home / 192,785.20-288,756.64-80,123.84

Finding the Fourth Proportional to 192,785.20, 288,756.64 and 80,123.84

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Solution

The fourth proportional to 192,785.20, 288,756.64 and 80,123.84 is: 120,010.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,785.20 : 288,756.64 = 80,123.84 : x
  2. Step 2: Convert to fraction form
    192,785.20/288,756.64 = 80,123.84/x
  3. Step 3: Cross multiply
    192,785.20x = 288,756.64 × 80,123.84
  4. Step 4: Simplify right side
    192,785.20x = 23,136,290,822.30
  5. Step 5: Solve for x
    x = 23,136,290,822.30/192,785.20
  6. Step 6: Final answer
    x = 120,010.72

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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.