Home / 231,008.72-318,789.60-135,497.12

Finding the Fourth Proportional to 231,008.72, 318,789.60 and 135,497.12

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Solution

The fourth proportional to 231,008.72, 318,789.60 and 135,497.12 is: 186,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,008.72 : 318,789.60 = 135,497.12 : x
  2. Step 2: Convert to fraction form
    231,008.72/318,789.60 = 135,497.12/x
  3. Step 3: Cross multiply
    231,008.72x = 318,789.60 × 135,497.12
  4. Step 4: Simplify right side
    231,008.72x = 43,195,072,685.95
  5. Step 5: Solve for x
    x = 43,195,072,685.95/231,008.72
  6. Step 6: Final answer
    x = 186,984.60

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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.