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Finding the Fourth Proportional to 123,474.58, 170,394.96 and 66,886

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Solution

The fourth proportional to 123,474.58, 170,394.96 and 66,886 is: 92,302.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,474.58 : 170,394.96 = 66,886 : x
  2. Step 2: Convert to fraction form
    123,474.58/170,394.96 = 66,886/x
  3. Step 3: Cross multiply
    123,474.58x = 170,394.96 × 66,886
  4. Step 4: Simplify right side
    123,474.58x = 11,397,037,294.56
  5. Step 5: Solve for x
    x = 11,397,037,294.56/123,474.58
  6. Step 6: Final answer
    x = 92,302.70

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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.