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Finding the Fourth Proportional to 100,278.87, 150,270.61 and 55,844.57

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Solution

The fourth proportional to 100,278.87, 150,270.61 and 55,844.57 is: 83,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,278.87 : 150,270.61 = 55,844.57 : x
  2. Step 2: Convert to fraction form
    100,278.87/150,270.61 = 55,844.57/x
  3. Step 3: Cross multiply
    100,278.87x = 150,270.61 × 55,844.57
  4. Step 4: Simplify right side
    100,278.87x = 8,391,797,599.09
  5. Step 5: Solve for x
    x = 8,391,797,599.09/100,278.87
  6. Step 6: Final answer
    x = 83,684.60

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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.