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Finding the Fourth Proportional to 123,542.64, 170,489.44 and 66,953.84

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Solution

The fourth proportional to 123,542.64, 170,489.44 and 66,953.84 is: 92,396.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,542.64 : 170,489.44 = 66,953.84 : x
  2. Step 2: Convert to fraction form
    123,542.64/170,489.44 = 66,953.84/x
  3. Step 3: Cross multiply
    123,542.64x = 170,489.44 × 66,953.84
  4. Step 4: Simplify right side
    123,542.64x = 11,414,922,687.45
  5. Step 5: Solve for x
    x = 11,414,922,687.45/123,542.64
  6. Step 6: Final answer
    x = 92,396.62

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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.