Home / 135,912.33-203,696.26-76,781.32

Finding the Fourth Proportional to 135,912.33, 203,696.26 and 76,781.32

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Solution

The fourth proportional to 135,912.33, 203,696.26 and 76,781.32 is: 115,074.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,912.33 : 203,696.26 = 76,781.32 : x
  2. Step 2: Convert to fraction form
    135,912.33/203,696.26 = 76,781.32/x
  3. Step 3: Cross multiply
    135,912.33x = 203,696.26 × 76,781.32
  4. Step 4: Simplify right side
    135,912.33x = 15,640,067,721.86
  5. Step 5: Solve for x
    x = 15,640,067,721.86/135,912.33
  6. Step 6: Final answer
    x = 115,074.68

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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.