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Finding the Fourth Proportional to 200,121.01, 300,221.67 and 73,761.88

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Solution

The fourth proportional to 200,121.01, 300,221.67 and 73,761.88 is: 110,657.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,121.01 : 300,221.67 = 73,761.88 : x
  2. Step 2: Convert to fraction form
    200,121.01/300,221.67 = 73,761.88/x
  3. Step 3: Cross multiply
    200,121.01x = 300,221.67 × 73,761.88
  4. Step 4: Simplify right side
    200,121.01x = 22,144,914,795.94
  5. Step 5: Solve for x
    x = 22,144,914,795.94/200,121.01
  6. Step 6: Final answer
    x = 110,657.62

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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.