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Finding the Fourth Proportional to 123,544.31, 170,486.57 and 66,954.47

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Solution

The fourth proportional to 123,544.31, 170,486.57 and 66,954.47 is: 92,394.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,544.31 : 170,486.57 = 66,954.47 : x
  2. Step 2: Convert to fraction form
    123,544.31/170,486.57 = 66,954.47/x
  3. Step 3: Cross multiply
    123,544.31x = 170,486.57 × 66,954.47
  4. Step 4: Simplify right side
    123,544.31x = 11,414,837,251.42
  5. Step 5: Solve for x
    x = 11,414,837,251.42/123,544.31
  6. Step 6: Final answer
    x = 92,394.69

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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.