Home / 154,575.42-231,861.30-87,112.55

Finding the Fourth Proportional to 154,575.42, 231,861.30 and 87,112.55

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Solution

The fourth proportional to 154,575.42, 231,861.30 and 87,112.55 is: 130,667.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,575.42 : 231,861.30 = 87,112.55 : x
  2. Step 2: Convert to fraction form
    154,575.42/231,861.30 = 87,112.55/x
  3. Step 3: Cross multiply
    154,575.42x = 231,861.30 × 87,112.55
  4. Step 4: Simplify right side
    154,575.42x = 20,198,027,930.01
  5. Step 5: Solve for x
    x = 20,198,027,930.01/154,575.42
  6. Step 6: Final answer
    x = 130,667.79

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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.