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Finding the Fourth Proportional to 139,260.56, 192,179.10 and 75,597.90

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Solution

The fourth proportional to 139,260.56, 192,179.10 and 75,597.90 is: 104,324.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,260.56 : 192,179.10 = 75,597.90 : x
  2. Step 2: Convert to fraction form
    139,260.56/192,179.10 = 75,597.90/x
  3. Step 3: Cross multiply
    139,260.56x = 192,179.10 × 75,597.90
  4. Step 4: Simplify right side
    139,260.56x = 14,528,336,383.89
  5. Step 5: Solve for x
    x = 14,528,336,383.89/139,260.56
  6. Step 6: Final answer
    x = 104,324.85

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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.