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Finding the Fourth Proportional to 139,479.62, 192,414.20 and 82,850.90

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Solution

The fourth proportional to 139,479.62, 192,414.20 and 82,850.90 is: 114,294.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,479.62 : 192,414.20 = 82,850.90 : x
  2. Step 2: Convert to fraction form
    139,479.62/192,414.20 = 82,850.90/x
  3. Step 3: Cross multiply
    139,479.62x = 192,414.20 × 82,850.90
  4. Step 4: Simplify right side
    139,479.62x = 15,941,688,266.45
  5. Step 5: Solve for x
    x = 15,941,688,266.45/139,479.62
  6. Step 6: Final answer
    x = 114,294.04

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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.