Home / 80,772.16-120,544.04-75,424.56

Finding the Fourth Proportional to 80,772.16, 120,544.04 and 75,424.56

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Solution

The fourth proportional to 80,772.16, 120,544.04 and 75,424.56 is: 112,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,772.16 : 120,544.04 = 75,424.56 : x
  2. Step 2: Convert to fraction form
    80,772.16/120,544.04 = 75,424.56/x
  3. Step 3: Cross multiply
    80,772.16x = 120,544.04 × 75,424.56
  4. Step 4: Simplify right side
    80,772.16x = 9,091,981,177.62
  5. Step 5: Solve for x
    x = 9,091,981,177.62/80,772.16
  6. Step 6: Final answer
    x = 112,563.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.