Home / 209,181.20-313,647-82,839.56

Finding the Fourth Proportional to 209,181.20, 313,647 and 82,839.56

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Solution

The fourth proportional to 209,181.20, 313,647 and 82,839.56 is: 124,209.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,181.20 : 313,647 = 82,839.56 : x
  2. Step 2: Convert to fraction form
    209,181.20/313,647 = 82,839.56/x
  3. Step 3: Cross multiply
    209,181.20x = 313,647 × 82,839.56
  4. Step 4: Simplify right side
    209,181.20x = 25,982,377,907.09
  5. Step 5: Solve for x
    x = 25,982,377,907.09/209,181.20
  6. Step 6: Final answer
    x = 124,209.91

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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.