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Finding the Fourth Proportional to 139,338.84, 192,286.44 and 75,676.44

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Solution

The fourth proportional to 139,338.84, 192,286.44 and 75,676.44 is: 104,432.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,338.84 : 192,286.44 = 75,676.44 : x
  2. Step 2: Convert to fraction form
    139,338.84/192,286.44 = 75,676.44/x
  3. Step 3: Cross multiply
    139,338.84x = 192,286.44 × 75,676.44
  4. Step 4: Simplify right side
    139,338.84x = 14,551,553,239.47
  5. Step 5: Solve for x
    x = 14,551,553,239.47/139,338.84
  6. Step 6: Final answer
    x = 104,432.86

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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.