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Finding the Fourth Proportional to 123,356.92, 170,223.08 and 69,647.24

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Solution

The fourth proportional to 123,356.92, 170,223.08 and 69,647.24 is: 96,107.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,356.92 : 170,223.08 = 69,647.24 : x
  2. Step 2: Convert to fraction form
    123,356.92/170,223.08 = 69,647.24/x
  3. Step 3: Cross multiply
    123,356.92x = 170,223.08 × 69,647.24
  4. Step 4: Simplify right side
    123,356.92x = 11,855,567,706.30
  5. Step 5: Solve for x
    x = 11,855,567,706.30/123,356.92
  6. Step 6: Final answer
    x = 96,107.84

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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.