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Finding the Fourth Proportional to 139,778.22, 192,760.38 and 93,941.40

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Solution

The fourth proportional to 139,778.22, 192,760.38 and 93,941.40 is: 129,549.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,778.22 : 192,760.38 = 93,941.40 : x
  2. Step 2: Convert to fraction form
    139,778.22/192,760.38 = 93,941.40/x
  3. Step 3: Cross multiply
    139,778.22x = 192,760.38 × 93,941.40
  4. Step 4: Simplify right side
    139,778.22x = 18,108,179,961.73
  5. Step 5: Solve for x
    x = 18,108,179,961.73/139,778.22
  6. Step 6: Final answer
    x = 129,549.37

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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.