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Finding the Fourth Proportional to 139,643.44, 192,722.14 and 82,301.23

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Solution

The fourth proportional to 139,643.44, 192,722.14 and 82,301.23 is: 113,584.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,643.44 : 192,722.14 = 82,301.23 : x
  2. Step 2: Convert to fraction form
    139,643.44/192,722.14 = 82,301.23/x
  3. Step 3: Cross multiply
    139,643.44x = 192,722.14 × 82,301.23
  4. Step 4: Simplify right side
    139,643.44x = 15,861,268,238.02
  5. Step 5: Solve for x
    x = 15,861,268,238.02/139,643.44
  6. Step 6: Final answer
    x = 113,584.05

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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.