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Finding the Fourth Proportional to 138,636.54, 207,954.81 and 33,455.52

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Solution

The fourth proportional to 138,636.54, 207,954.81 and 33,455.52 is: 50,183.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,636.54 : 207,954.81 = 33,455.52 : x
  2. Step 2: Convert to fraction form
    138,636.54/207,954.81 = 33,455.52/x
  3. Step 3: Cross multiply
    138,636.54x = 207,954.81 × 33,455.52
  4. Step 4: Simplify right side
    138,636.54x = 6,957,236,305.05
  5. Step 5: Solve for x
    x = 6,957,236,305.05/138,636.54
  6. Step 6: Final answer
    x = 50,183.28

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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.