Home / 231,214.18-319,074.65-129,239.53

Finding the Fourth Proportional to 231,214.18, 319,074.65 and 129,239.53

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Solution

The fourth proportional to 231,214.18, 319,074.65 and 129,239.53 is: 178,350.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,214.18 : 319,074.65 = 129,239.53 : x
  2. Step 2: Convert to fraction form
    231,214.18/319,074.65 = 129,239.53/x
  3. Step 3: Cross multiply
    231,214.18x = 319,074.65 × 129,239.53
  4. Step 4: Simplify right side
    231,214.18x = 41,237,057,154.72
  5. Step 5: Solve for x
    x = 41,237,057,154.72/231,214.18
  6. Step 6: Final answer
    x = 178,350.04

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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.