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Finding the Fourth Proportional to 161,185.80, 241,721.10 and 72,481.80

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Solution

The fourth proportional to 161,185.80, 241,721.10 and 72,481.80 is: 108,696.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,185.80 : 241,721.10 = 72,481.80 : x
  2. Step 2: Convert to fraction form
    161,185.80/241,721.10 = 72,481.80/x
  3. Step 3: Cross multiply
    161,185.80x = 241,721.10 × 72,481.80
  4. Step 4: Simplify right side
    161,185.80x = 17,520,380,425.98
  5. Step 5: Solve for x
    x = 17,520,380,425.98/161,185.80
  6. Step 6: Final answer
    x = 108,696.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.