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Finding the Fourth Proportional to 123,596.97, 170,556.91 and 69,138.62

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Solution

The fourth proportional to 123,596.97, 170,556.91 and 69,138.62 is: 95,407.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,596.97 : 170,556.91 = 69,138.62 : x
  2. Step 2: Convert to fraction form
    123,596.97/170,556.91 = 69,138.62/x
  3. Step 3: Cross multiply
    123,596.97x = 170,556.91 × 69,138.62
  4. Step 4: Simplify right side
    123,596.97x = 11,792,069,388.86
  5. Step 5: Solve for x
    x = 11,792,069,388.86/123,596.97
  6. Step 6: Final answer
    x = 95,407.43

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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.