Home / 80,949.70-120,791.39-72,544.06

Finding the Fourth Proportional to 80,949.70, 120,791.39 and 72,544.06

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Solution

The fourth proportional to 80,949.70, 120,791.39 and 72,544.06 is: 108,248.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,949.70 : 120,791.39 = 72,544.06 : x
  2. Step 2: Convert to fraction form
    80,949.70/120,791.39 = 72,544.06/x
  3. Step 3: Cross multiply
    80,949.70x = 120,791.39 × 72,544.06
  4. Step 4: Simplify right side
    80,949.70x = 8,762,697,843.64
  5. Step 5: Solve for x
    x = 8,762,697,843.64/80,949.70
  6. Step 6: Final answer
    x = 108,248.68

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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.