Home / 134,839.57-185,998.44-87,121.06

Finding the Fourth Proportional to 134,839.57, 185,998.44 and 87,121.06

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Solution

The fourth proportional to 134,839.57, 185,998.44 and 87,121.06 is: 120,175.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,839.57 : 185,998.44 = 87,121.06 : x
  2. Step 2: Convert to fraction form
    134,839.57/185,998.44 = 87,121.06/x
  3. Step 3: Cross multiply
    134,839.57x = 185,998.44 × 87,121.06
  4. Step 4: Simplify right side
    134,839.57x = 16,204,381,251.15
  5. Step 5: Solve for x
    x = 16,204,381,251.15/134,839.57
  6. Step 6: Final answer
    x = 120,175.27

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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.