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Finding the Fourth Proportional to 231,150, 318,987 and 125,166

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Solution

The fourth proportional to 231,150, 318,987 and 125,166 is: 172,729.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,150 : 318,987 = 125,166 : x
  2. Step 2: Convert to fraction form
    231,150/318,987 = 125,166/x
  3. Step 3: Cross multiply
    231,150x = 318,987 × 125,166
  4. Step 4: Simplify right side
    231,150x = 39,926,326,842
  5. Step 5: Solve for x
    x = 39,926,326,842/231,150
  6. Step 6: Final answer
    x = 172,729.08

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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.