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Finding the Fourth Proportional to 139,794.66, 209,698.90 and 39,969.54

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Solution

The fourth proportional to 139,794.66, 209,698.90 and 39,969.54 is: 59,956.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,794.66 : 209,698.90 = 39,969.54 : x
  2. Step 2: Convert to fraction form
    139,794.66/209,698.90 = 39,969.54/x
  3. Step 3: Cross multiply
    139,794.66x = 209,698.90 × 39,969.54
  4. Step 4: Simplify right side
    139,794.66x = 8,381,568,471.58
  5. Step 5: Solve for x
    x = 8,381,568,471.58/139,794.66
  6. Step 6: Final answer
    x = 59,956.28

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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.