Home / 154,287.68-231,279.71-90,164.44

Finding the Fourth Proportional to 154,287.68, 231,279.71 and 90,164.44

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Solution

The fourth proportional to 154,287.68, 231,279.71 and 90,164.44 is: 135,157.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,287.68 : 231,279.71 = 90,164.44 : x
  2. Step 2: Convert to fraction form
    154,287.68/231,279.71 = 90,164.44/x
  3. Step 3: Cross multiply
    154,287.68x = 231,279.71 × 90,164.44
  4. Step 4: Simplify right side
    154,287.68x = 20,853,203,928.29
  5. Step 5: Solve for x
    x = 20,853,203,928.29/154,287.68
  6. Step 6: Final answer
    x = 135,157.93

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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.