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Finding the Fourth Proportional to 138,798.06, 208,198.80 and 48,843.46

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Solution

The fourth proportional to 138,798.06, 208,198.80 and 48,843.46 is: 73,265.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,798.06 : 208,198.80 = 48,843.46 : x
  2. Step 2: Convert to fraction form
    138,798.06/208,198.80 = 48,843.46/x
  3. Step 3: Cross multiply
    138,798.06x = 208,198.80 × 48,843.46
  4. Step 4: Simplify right side
    138,798.06x = 10,169,149,759.85
  5. Step 5: Solve for x
    x = 10,169,149,759.85/138,798.06
  6. Step 6: Final answer
    x = 73,265.79

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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.