Home / 199,787.28-299,724.72-75,128.24

Finding the Fourth Proportional to 199,787.28, 299,724.72 and 75,128.24

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Solution

The fourth proportional to 199,787.28, 299,724.72 and 75,128.24 is: 112,708.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,787.28 : 299,724.72 = 75,128.24 : x
  2. Step 2: Convert to fraction form
    199,787.28/299,724.72 = 75,128.24/x
  3. Step 3: Cross multiply
    199,787.28x = 299,724.72 × 75,128.24
  4. Step 4: Simplify right side
    199,787.28x = 22,517,790,698.09
  5. Step 5: Solve for x
    x = 22,517,790,698.09/199,787.28
  6. Step 6: Final answer
    x = 112,708.83

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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.