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Finding the Fourth Proportional to 139,676.58, 192,757.71 and 76,018.41

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Solution

The fourth proportional to 139,676.58, 192,757.71 and 76,018.41 is: 104,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,676.58 : 192,757.71 = 76,018.41 : x
  2. Step 2: Convert to fraction form
    139,676.58/192,757.71 = 76,018.41/x
  3. Step 3: Cross multiply
    139,676.58x = 192,757.71 × 76,018.41
  4. Step 4: Simplify right side
    139,676.58x = 14,653,134,629.44
  5. Step 5: Solve for x
    x = 14,653,134,629.44/139,676.58
  6. Step 6: Final answer
    x = 104,907.60

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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.