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Finding the Fourth Proportional to 138,936.66, 208,422.63 and 44,133.03

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Solution

The fourth proportional to 138,936.66, 208,422.63 and 44,133.03 is: 66,205.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,936.66 : 208,422.63 = 44,133.03 : x
  2. Step 2: Convert to fraction form
    138,936.66/208,422.63 = 44,133.03/x
  3. Step 3: Cross multiply
    138,936.66x = 208,422.63 × 44,133.03
  4. Step 4: Simplify right side
    138,936.66x = 9,198,322,182.47
  5. Step 5: Solve for x
    x = 9,198,322,182.47/138,936.66
  6. Step 6: Final answer
    x = 66,205.15

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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.