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Finding the Fourth Proportional to 123,563.01, 170,553.20 and 71,892.26

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Solution

The fourth proportional to 123,563.01, 170,553.20 and 71,892.26 is: 99,232.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,563.01 : 170,553.20 = 71,892.26 : x
  2. Step 2: Convert to fraction form
    123,563.01/170,553.20 = 71,892.26/x
  3. Step 3: Cross multiply
    123,563.01x = 170,553.20 × 71,892.26
  4. Step 4: Simplify right side
    123,563.01x = 12,261,455,309.65
  5. Step 5: Solve for x
    x = 12,261,455,309.65/123,563.01
  6. Step 6: Final answer
    x = 99,232.41

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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.