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Finding the Fourth Proportional to 138,799.45, 208,198.46 and 33,618.41

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Solution

The fourth proportional to 138,799.45, 208,198.46 and 33,618.41 is: 50,427.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,799.45 : 208,198.46 = 33,618.41 : x
  2. Step 2: Convert to fraction form
    138,799.45/208,198.46 = 33,618.41/x
  3. Step 3: Cross multiply
    138,799.45x = 208,198.46 × 33,618.41
  4. Step 4: Simplify right side
    138,799.45x = 6,999,301,189.65
  5. Step 5: Solve for x
    x = 6,999,301,189.65/138,799.45
  6. Step 6: Final answer
    x = 50,427.44

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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.