Home / 209,177.62-313,635.20-138,024.78

Finding the Fourth Proportional to 209,177.62, 313,635.20 and 138,024.78

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Solution

The fourth proportional to 209,177.62, 313,635.20 and 138,024.78 is: 206,950.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,177.62 : 313,635.20 = 138,024.78 : x
  2. Step 2: Convert to fraction form
    209,177.62/313,635.20 = 138,024.78/x
  3. Step 3: Cross multiply
    209,177.62x = 313,635.20 × 138,024.78
  4. Step 4: Simplify right side
    209,177.62x = 43,289,429,480.26
  5. Step 5: Solve for x
    x = 43,289,429,480.26/209,177.62
  6. Step 6: Final answer
    x = 206,950.58

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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.