Home / 138,759.36-208,148-48,791.04

Finding the Fourth Proportional to 138,759.36, 208,148 and 48,791.04

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Solution

The fourth proportional to 138,759.36, 208,148 and 48,791.04 is: 73,189.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,759.36 : 208,148 = 48,791.04 : x
  2. Step 2: Convert to fraction form
    138,759.36/208,148 = 48,791.04/x
  3. Step 3: Cross multiply
    138,759.36x = 208,148 × 48,791.04
  4. Step 4: Simplify right side
    138,759.36x = 10,155,757,393.92
  5. Step 5: Solve for x
    x = 10,155,757,393.92/138,759.36
  6. Step 6: Final answer
    x = 73,189.71

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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.