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Finding the Fourth Proportional to 90,164.88, 135,198.36 and 26,976.24

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Solution

The fourth proportional to 90,164.88, 135,198.36 and 26,976.24 is: 40,449.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,164.88 : 135,198.36 = 26,976.24 : x
  2. Step 2: Convert to fraction form
    90,164.88/135,198.36 = 26,976.24/x
  3. Step 3: Cross multiply
    90,164.88x = 135,198.36 × 26,976.24
  4. Step 4: Simplify right side
    90,164.88x = 3,647,143,406.97
  5. Step 5: Solve for x
    x = 3,647,143,406.97/90,164.88
  6. Step 6: Final answer
    x = 40,449.71

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1.5x scale

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.