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Finding the Fourth Proportional to 123,675.91, 170,672.82 and 69,959.80

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Solution

The fourth proportional to 123,675.91, 170,672.82 and 69,959.80 is: 96,544.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,675.91 : 170,672.82 = 69,959.80 : x
  2. Step 2: Convert to fraction form
    123,675.91/170,672.82 = 69,959.80/x
  3. Step 3: Cross multiply
    123,675.91x = 170,672.82 × 69,959.80
  4. Step 4: Simplify right side
    123,675.91x = 11,940,236,697.15
  5. Step 5: Solve for x
    x = 11,940,236,697.15/123,675.91
  6. Step 6: Final answer
    x = 96,544.56

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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.