Home / 231,135.06-318,965.72-129,160.62

Finding the Fourth Proportional to 231,135.06, 318,965.72 and 129,160.62

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Solution

The fourth proportional to 231,135.06, 318,965.72 and 129,160.62 is: 178,241.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,135.06 : 318,965.72 = 129,160.62 : x
  2. Step 2: Convert to fraction form
    231,135.06/318,965.72 = 129,160.62/x
  3. Step 3: Cross multiply
    231,135.06x = 318,965.72 × 129,160.62
  4. Step 4: Simplify right side
    231,135.06x = 41,197,810,476.85
  5. Step 5: Solve for x
    x = 41,197,810,476.85/231,135.06
  6. Step 6: Final answer
    x = 178,241.29

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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.