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Finding the Fourth Proportional to 139,301.34, 192,238.11 and 75,639.29

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Solution

The fourth proportional to 139,301.34, 192,238.11 and 75,639.29 is: 104,383.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,301.34 : 192,238.11 = 75,639.29 : x
  2. Step 2: Convert to fraction form
    139,301.34/192,238.11 = 75,639.29/x
  3. Step 3: Cross multiply
    139,301.34x = 192,238.11 × 75,639.29
  4. Step 4: Simplify right side
    139,301.34x = 14,540,753,190.15
  5. Step 5: Solve for x
    x = 14,540,753,190.15/139,301.34
  6. Step 6: Final answer
    x = 104,383.44

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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.