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Finding the Fourth Proportional to 139,204.64, 192,100.36 and 81,850.44

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Solution

The fourth proportional to 139,204.64, 192,100.36 and 81,850.44 is: 112,952.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,204.64 : 192,100.36 = 81,850.44 : x
  2. Step 2: Convert to fraction form
    139,204.64/192,100.36 = 81,850.44/x
  3. Step 3: Cross multiply
    139,204.64x = 192,100.36 × 81,850.44
  4. Step 4: Simplify right side
    139,204.64x = 15,723,498,990.16
  5. Step 5: Solve for x
    x = 15,723,498,990.16/139,204.64
  6. Step 6: Final answer
    x = 112,952.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.