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Finding the Fourth Proportional to 123,474.68, 170,394.88 and 66,886.28

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Solution

The fourth proportional to 123,474.68, 170,394.88 and 66,886.28 is: 92,302.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,474.68 : 170,394.88 = 66,886.28 : x
  2. Step 2: Convert to fraction form
    123,474.68/170,394.88 = 66,886.28/x
  3. Step 3: Cross multiply
    123,474.68x = 170,394.88 × 66,886.28
  4. Step 4: Simplify right side
    123,474.68x = 11,397,079,654.25
  5. Step 5: Solve for x
    x = 11,397,079,654.25/123,474.68
  6. Step 6: Final answer
    x = 92,302.97

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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.