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Finding the Fourth Proportional to 123,542.26, 170,488.46 and 66,953.64

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Solution

The fourth proportional to 123,542.26, 170,488.46 and 66,953.64 is: 92,396.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,542.26 : 170,488.46 = 66,953.64 : x
  2. Step 2: Convert to fraction form
    123,542.26/170,488.46 = 66,953.64/x
  3. Step 3: Cross multiply
    123,542.26x = 170,488.46 × 66,953.64
  4. Step 4: Simplify right side
    123,542.26x = 11,414,822,974.99
  5. Step 5: Solve for x
    x = 11,414,822,974.99/123,542.26
  6. Step 6: Final answer
    x = 92,396.10

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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.