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Finding the Fourth Proportional to 139,725.11, 192,847.22 and 79,301.41

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Solution

The fourth proportional to 139,725.11, 192,847.22 and 79,301.41 is: 109,451.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,725.11 : 192,847.22 = 79,301.41 : x
  2. Step 2: Convert to fraction form
    139,725.11/192,847.22 = 79,301.41/x
  3. Step 3: Cross multiply
    139,725.11x = 192,847.22 × 79,301.41
  4. Step 4: Simplify right side
    139,725.11x = 15,293,056,460.58
  5. Step 5: Solve for x
    x = 15,293,056,460.58/139,725.11
  6. Step 6: Final answer
    x = 109,451.02

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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.