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Finding the Fourth Proportional to 171,739, 236,999.82 and 100,122.04

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Solution

The fourth proportional to 171,739, 236,999.82 and 100,122.04 is: 138,168.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,739 : 236,999.82 = 100,122.04 : x
  2. Step 2: Convert to fraction form
    171,739/236,999.82 = 100,122.04/x
  3. Step 3: Cross multiply
    171,739x = 236,999.82 × 100,122.04
  4. Step 4: Simplify right side
    171,739x = 23,728,905,458.03
  5. Step 5: Solve for x
    x = 23,728,905,458.03/171,739
  6. Step 6: Final answer
    x = 138,168.42

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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.