Home / 133,039.38-199,453.10-76,815.71

Finding the Fourth Proportional to 133,039.38, 199,453.10 and 76,815.71

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Solution

The fourth proportional to 133,039.38, 199,453.10 and 76,815.71 is: 115,162.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,039.38 : 199,453.10 = 76,815.71 : x
  2. Step 2: Convert to fraction form
    133,039.38/199,453.10 = 76,815.71/x
  3. Step 3: Cross multiply
    133,039.38x = 199,453.10 × 76,815.71
  4. Step 4: Simplify right side
    133,039.38x = 15,321,131,488.20
  5. Step 5: Solve for x
    x = 15,321,131,488.20/133,039.38
  6. Step 6: Final answer
    x = 115,162.38

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1.5x scale

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.