Home / 199,696.20-275,641.78-123,238.68

Finding the Fourth Proportional to 199,696.20, 275,641.78 and 123,238.68

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Solution

The fourth proportional to 199,696.20, 275,641.78 and 123,238.68 is: 170,107.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,696.20 : 275,641.78 = 123,238.68 : x
  2. Step 2: Convert to fraction form
    199,696.20/275,641.78 = 123,238.68/x
  3. Step 3: Cross multiply
    199,696.20x = 275,641.78 × 123,238.68
  4. Step 4: Simplify right side
    199,696.20x = 33,969,729,120.05
  5. Step 5: Solve for x
    x = 33,969,729,120.05/199,696.20
  6. Step 6: Final answer
    x = 170,107.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.