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Finding the Fourth Proportional to 123,634.76, 170,578.29 and 69,181.28

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Solution

The fourth proportional to 123,634.76, 170,578.29 and 69,181.28 is: 95,449.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,634.76 : 170,578.29 = 69,181.28 : x
  2. Step 2: Convert to fraction form
    123,634.76/170,578.29 = 69,181.28/x
  3. Step 3: Cross multiply
    123,634.76x = 170,578.29 × 69,181.28
  4. Step 4: Simplify right side
    123,634.76x = 11,800,824,488.62
  5. Step 5: Solve for x
    x = 11,800,824,488.62/123,634.76
  6. Step 6: Final answer
    x = 95,449.09

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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.