Home / 106,138.77-146,481.84-79,234.56

Finding the Fourth Proportional to 106,138.77, 146,481.84 and 79,234.56

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Solution

The fourth proportional to 106,138.77, 146,481.84 and 79,234.56 is: 109,351.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,138.77 : 146,481.84 = 79,234.56 : x
  2. Step 2: Convert to fraction form
    106,138.77/146,481.84 = 79,234.56/x
  3. Step 3: Cross multiply
    106,138.77x = 146,481.84 × 79,234.56
  4. Step 4: Simplify right side
    106,138.77x = 11,606,424,140.39
  5. Step 5: Solve for x
    x = 11,606,424,140.39/106,138.77
  6. Step 6: Final answer
    x = 109,351.41

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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.