Home / 231,481.80-319,374.90-135,934.20

Finding the Fourth Proportional to 231,481.80, 319,374.90 and 135,934.20

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Solution

The fourth proportional to 231,481.80, 319,374.90 and 135,934.20 is: 187,548.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,481.80 : 319,374.90 = 135,934.20 : x
  2. Step 2: Convert to fraction form
    231,481.80/319,374.90 = 135,934.20/x
  3. Step 3: Cross multiply
    231,481.80x = 319,374.90 × 135,934.20
  4. Step 4: Simplify right side
    231,481.80x = 43,413,971,531.58
  5. Step 5: Solve for x
    x = 43,413,971,531.58/231,481.80
  6. Step 6: Final answer
    x = 187,548.10

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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.