Home / 90,494.32-135,488.20-68,238.04

Finding the Fourth Proportional to 90,494.32, 135,488.20 and 68,238.04

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Solution

The fourth proportional to 90,494.32, 135,488.20 and 68,238.04 is: 102,166.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,494.32 : 135,488.20 = 68,238.04 : x
  2. Step 2: Convert to fraction form
    90,494.32/135,488.20 = 68,238.04/x
  3. Step 3: Cross multiply
    90,494.32x = 135,488.20 × 68,238.04
  4. Step 4: Simplify right side
    90,494.32x = 9,245,449,211.13
  5. Step 5: Solve for x
    x = 9,245,449,211.13/90,494.32
  6. Step 6: Final answer
    x = 102,166.07

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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.