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Finding the Fourth Proportional to 139,180.38, 192,068.10 and 75,516.84

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Solution

The fourth proportional to 139,180.38, 192,068.10 and 75,516.84 is: 104,212.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,180.38 : 192,068.10 = 75,516.84 : x
  2. Step 2: Convert to fraction form
    139,180.38/192,068.10 = 75,516.84/x
  3. Step 3: Cross multiply
    139,180.38x = 192,068.10 × 75,516.84
  4. Step 4: Simplify right side
    139,180.38x = 14,504,375,976.80
  5. Step 5: Solve for x
    x = 14,504,375,976.80/139,180.38
  6. Step 6: Final answer
    x = 104,212.79

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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.