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Finding the Fourth Proportional to 138,936.93, 208,404.78 and 33,756.20

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Solution

The fourth proportional to 138,936.93, 208,404.78 and 33,756.20 is: 50,634.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,936.93 : 208,404.78 = 33,756.20 : x
  2. Step 2: Convert to fraction form
    138,936.93/208,404.78 = 33,756.20/x
  3. Step 3: Cross multiply
    138,936.93x = 208,404.78 × 33,756.20
  4. Step 4: Simplify right side
    138,936.93x = 7,034,953,434.64
  5. Step 5: Solve for x
    x = 7,034,953,434.64/138,936.93
  6. Step 6: Final answer
    x = 50,634.15

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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.