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Finding the Fourth Proportional to 171,738, 236,998.44 and 100,121.04

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Solution

The fourth proportional to 171,738, 236,998.44 and 100,121.04 is: 138,167.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,738 : 236,998.44 = 100,121.04 : x
  2. Step 2: Convert to fraction form
    171,738/236,998.44 = 100,121.04/x
  3. Step 3: Cross multiply
    171,738x = 236,998.44 × 100,121.04
  4. Step 4: Simplify right side
    171,738x = 23,728,530,291.18
  5. Step 5: Solve for x
    x = 23,728,530,291.18/171,738
  6. Step 6: Final answer
    x = 138,167.04

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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.