Home / 139,974.38-209,918.50-40,107.82

Finding the Fourth Proportional to 139,974.38, 209,918.50 and 40,107.82

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Solution

The fourth proportional to 139,974.38, 209,918.50 and 40,107.82 is: 60,149.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,974.38 : 209,918.50 = 40,107.82 : x
  2. Step 2: Convert to fraction form
    139,974.38/209,918.50 = 40,107.82/x
  3. Step 3: Cross multiply
    139,974.38x = 209,918.50 × 40,107.82
  4. Step 4: Simplify right side
    139,974.38x = 8,419,373,412.67
  5. Step 5: Solve for x
    x = 8,419,373,412.67/139,974.38
  6. Step 6: Final answer
    x = 60,149.39

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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.