Home / 78,198.38-117,297.78-19,033.96

Finding the Fourth Proportional to 78,198.38, 117,297.78 and 19,033.96

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Solution

The fourth proportional to 78,198.38, 117,297.78 and 19,033.96 is: 28,550.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,198.38 : 117,297.78 = 19,033.96 : x
  2. Step 2: Convert to fraction form
    78,198.38/117,297.78 = 19,033.96/x
  3. Step 3: Cross multiply
    78,198.38x = 117,297.78 × 19,033.96
  4. Step 4: Simplify right side
    78,198.38x = 2,232,641,252.61
  5. Step 5: Solve for x
    x = 2,232,641,252.61/78,198.38
  6. Step 6: Final answer
    x = 28,550.99

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1.5x scale

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.