Home / 135,399.82-186,862.28-74,976.09

Finding the Fourth Proportional to 135,399.82, 186,862.28 and 74,976.09

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Solution

The fourth proportional to 135,399.82, 186,862.28 and 74,976.09 is: 103,472.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,399.82 : 186,862.28 = 74,976.09 : x
  2. Step 2: Convert to fraction form
    135,399.82/186,862.28 = 74,976.09/x
  3. Step 3: Cross multiply
    135,399.82x = 186,862.28 × 74,976.09
  4. Step 4: Simplify right side
    135,399.82x = 14,010,203,122.89
  5. Step 5: Solve for x
    x = 14,010,203,122.89/135,399.82
  6. Step 6: Final answer
    x = 103,472.83

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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.