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Finding the Fourth Proportional to 69,198.22, 103,797.42 and 19,278.46

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Solution

The fourth proportional to 69,198.22, 103,797.42 and 19,278.46 is: 28,917.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,198.22 : 103,797.42 = 19,278.46 : x
  2. Step 2: Convert to fraction form
    69,198.22/103,797.42 = 19,278.46/x
  3. Step 3: Cross multiply
    69,198.22x = 103,797.42 × 19,278.46
  4. Step 4: Simplify right side
    69,198.22x = 2,001,054,409.57
  5. Step 5: Solve for x
    x = 2,001,054,409.57/69,198.22
  6. Step 6: Final answer
    x = 28,917.72

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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.