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Finding the Fourth Proportional to 139,134.45, 208,734.44 and 110,778.65

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Solution

The fourth proportional to 139,134.45, 208,734.44 and 110,778.65 is: 166,194.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,134.45 : 208,734.44 = 110,778.65 : x
  2. Step 2: Convert to fraction form
    139,134.45/208,734.44 = 110,778.65/x
  3. Step 3: Cross multiply
    139,134.45x = 208,734.44 × 110,778.65
  4. Step 4: Simplify right side
    139,134.45x = 23,123,319,471.71
  5. Step 5: Solve for x
    x = 23,123,319,471.71/139,134.45
  6. Step 6: Final answer
    x = 166,194.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.