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Finding the Fourth Proportional to 139,109.91, 208,679.90 and 44,317.73

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Solution

The fourth proportional to 139,109.91, 208,679.90 and 44,317.73 is: 66,481.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,109.91 : 208,679.90 = 44,317.73 : x
  2. Step 2: Convert to fraction form
    139,109.91/208,679.90 = 44,317.73/x
  3. Step 3: Cross multiply
    139,109.91x = 208,679.90 × 44,317.73
  4. Step 4: Simplify right side
    139,109.91x = 9,248,219,764.74
  5. Step 5: Solve for x
    x = 9,248,219,764.74/139,109.91
  6. Step 6: Final answer
    x = 66,481.39

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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.