Home / 78,194.16-117,290.88-19,029.60

Finding the Fourth Proportional to 78,194.16, 117,290.88 and 19,029.60

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Solution

The fourth proportional to 78,194.16, 117,290.88 and 19,029.60 is: 28,544.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,194.16 : 117,290.88 = 19,029.60 : x
  2. Step 2: Convert to fraction form
    78,194.16/117,290.88 = 19,029.60/x
  3. Step 3: Cross multiply
    78,194.16x = 117,290.88 × 19,029.60
  4. Step 4: Simplify right side
    78,194.16x = 2,231,998,530.05
  5. Step 5: Solve for x
    x = 2,231,998,530.05/78,194.16
  6. Step 6: Final answer
    x = 28,544.31

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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.