Home / 78,198.72-117,296.88-19,034.16

Finding the Fourth Proportional to 78,198.72, 117,296.88 and 19,034.16

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Solution

The fourth proportional to 78,198.72, 117,296.88 and 19,034.16 is: 28,550.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,198.72 : 117,296.88 = 19,034.16 : x
  2. Step 2: Convert to fraction form
    78,198.72/117,296.88 = 19,034.16/x
  3. Step 3: Cross multiply
    78,198.72x = 117,296.88 × 19,034.16
  4. Step 4: Simplify right side
    78,198.72x = 2,232,647,581.42
  5. Step 5: Solve for x
    x = 2,232,647,581.42/78,198.72
  6. Step 6: Final answer
    x = 28,550.95

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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.