Home / 231,071.21-318,872.40-129,097.44

Finding the Fourth Proportional to 231,071.21, 318,872.40 and 129,097.44

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Solution

The fourth proportional to 231,071.21, 318,872.40 and 129,097.44 is: 178,151.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,071.21 : 318,872.40 = 129,097.44 : x
  2. Step 2: Convert to fraction form
    231,071.21/318,872.40 = 129,097.44/x
  3. Step 3: Cross multiply
    231,071.21x = 318,872.40 × 129,097.44
  4. Step 4: Simplify right side
    231,071.21x = 41,165,609,406.73
  5. Step 5: Solve for x
    x = 41,165,609,406.73/231,071.21
  6. Step 6: Final answer
    x = 178,151.18

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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.