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Finding the Fourth Proportional to 123,542.70, 170,488.85 and 66,954.08

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Solution

The fourth proportional to 123,542.70, 170,488.85 and 66,954.08 is: 92,396.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,542.70 : 170,488.85 = 66,954.08 : x
  2. Step 2: Convert to fraction form
    123,542.70/170,488.85 = 66,954.08/x
  3. Step 3: Cross multiply
    123,542.70x = 170,488.85 × 66,954.08
  4. Step 4: Simplify right side
    123,542.70x = 11,414,922,914.79
  5. Step 5: Solve for x
    x = 11,414,922,914.79/123,542.70
  6. Step 6: Final answer
    x = 92,396.58

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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.