Home / 231,000.31-318,785.66-135,575.83

Finding the Fourth Proportional to 231,000.31, 318,785.66 and 135,575.83

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Solution

The fourth proportional to 231,000.31, 318,785.66 and 135,575.83 is: 187,097.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,000.31 : 318,785.66 = 135,575.83 : x
  2. Step 2: Convert to fraction form
    231,000.31/318,785.66 = 135,575.83/x
  3. Step 3: Cross multiply
    231,000.31x = 318,785.66 × 135,575.83
  4. Step 4: Simplify right side
    231,000.31x = 43,219,630,446.60
  5. Step 5: Solve for x
    x = 43,219,630,446.60/231,000.31
  6. Step 6: Final answer
    x = 187,097.72

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1.5x scale

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.