Home / 135,679.38-187,248.78-75,269.52

Finding the Fourth Proportional to 135,679.38, 187,248.78 and 75,269.52

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Solution

The fourth proportional to 135,679.38, 187,248.78 and 75,269.52 is: 103,878.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,679.38 : 187,248.78 = 75,269.52 : x
  2. Step 2: Convert to fraction form
    135,679.38/187,248.78 = 75,269.52/x
  3. Step 3: Cross multiply
    135,679.38x = 187,248.78 × 75,269.52
  4. Step 4: Simplify right side
    135,679.38x = 14,094,125,791.19
  5. Step 5: Solve for x
    x = 14,094,125,791.19/135,679.38
  6. Step 6: Final answer
    x = 103,878.17

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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.