Home / 188,961.30-260,756.75-117,339.80

Finding the Fourth Proportional to 188,961.30, 260,756.75 and 117,339.80

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Solution

The fourth proportional to 188,961.30, 260,756.75 and 117,339.80 is: 161,922.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,961.30 : 260,756.75 = 117,339.80 : x
  2. Step 2: Convert to fraction form
    188,961.30/260,756.75 = 117,339.80/x
  3. Step 3: Cross multiply
    188,961.30x = 260,756.75 × 117,339.80
  4. Step 4: Simplify right side
    188,961.30x = 30,597,143,883.22
  5. Step 5: Solve for x
    x = 30,597,143,883.22/188,961.30
  6. Step 6: Final answer
    x = 161,922.81

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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.