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Finding the Fourth Proportional to 128,422.44, 192,604.43 and 48,468.88

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Solution

The fourth proportional to 128,422.44, 192,604.43 and 48,468.88 is: 72,692.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,422.44 : 192,604.43 = 48,468.88 : x
  2. Step 2: Convert to fraction form
    128,422.44/192,604.43 = 48,468.88/x
  3. Step 3: Cross multiply
    128,422.44x = 192,604.43 × 48,468.88
  4. Step 4: Simplify right side
    128,422.44x = 9,335,321,367.07
  5. Step 5: Solve for x
    x = 9,335,321,367.07/128,422.44
  6. Step 6: Final answer
    x = 72,692.29

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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.