Home / 187,057.28-280,622.52-68,729.60

Finding the Fourth Proportional to 187,057.28, 280,622.52 and 68,729.60

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Solution

The fourth proportional to 187,057.28, 280,622.52 and 68,729.60 is: 103,107.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,057.28 : 280,622.52 = 68,729.60 : x
  2. Step 2: Convert to fraction form
    187,057.28/280,622.52 = 68,729.60/x
  3. Step 3: Cross multiply
    187,057.28x = 280,622.52 × 68,729.60
  4. Step 4: Simplify right side
    187,057.28x = 19,287,073,550.59
  5. Step 5: Solve for x
    x = 19,287,073,550.59/187,057.28
  6. Step 6: Final answer
    x = 103,107.85

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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.