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Finding the Fourth Proportional to 231,032, 318,825.12 and 125,048

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Solution

The fourth proportional to 231,032, 318,825.12 and 125,048 is: 172,566.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,032 : 318,825.12 = 125,048 : x
  2. Step 2: Convert to fraction form
    231,032/318,825.12 = 125,048/x
  3. Step 3: Cross multiply
    231,032x = 318,825.12 × 125,048
  4. Step 4: Simplify right side
    231,032x = 39,868,443,605.76
  5. Step 5: Solve for x
    x = 39,868,443,605.76/231,032
  6. Step 6: Final answer
    x = 172,566.76

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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.