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Finding the Fourth Proportional to 139,251.72, 192,323.97 and 94,116.09

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Solution

The fourth proportional to 139,251.72, 192,323.97 and 94,116.09 is: 129,986.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,251.72 : 192,323.97 = 94,116.09 : x
  2. Step 2: Convert to fraction form
    139,251.72/192,323.97 = 94,116.09/x
  3. Step 3: Cross multiply
    139,251.72x = 192,323.97 × 94,116.09
  4. Step 4: Simplify right side
    139,251.72x = 18,100,780,069.68
  5. Step 5: Solve for x
    x = 18,100,780,069.68/139,251.72
  6. Step 6: Final answer
    x = 129,986.04

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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.