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Finding the Fourth Proportional to 139,509.73, 209,278.37 and 44,716.11

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Solution

The fourth proportional to 139,509.73, 209,278.37 and 44,716.11 is: 67,078.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,509.73 : 209,278.37 = 44,716.11 : x
  2. Step 2: Convert to fraction form
    139,509.73/209,278.37 = 44,716.11/x
  3. Step 3: Cross multiply
    139,509.73x = 209,278.37 × 44,716.11
  4. Step 4: Simplify right side
    139,509.73x = 9,358,114,613.54
  5. Step 5: Solve for x
    x = 9,358,114,613.54/139,509.73
  6. Step 6: Final answer
    x = 67,078.58

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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.