Home / 117,769.05-162,517.86-66,786.57

Finding the Fourth Proportional to 117,769.05, 162,517.86 and 66,786.57

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Solution

The fourth proportional to 117,769.05, 162,517.86 and 66,786.57 is: 92,163.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,769.05 : 162,517.86 = 66,786.57 : x
  2. Step 2: Convert to fraction form
    117,769.05/162,517.86 = 66,786.57/x
  3. Step 3: Cross multiply
    117,769.05x = 162,517.86 × 66,786.57
  4. Step 4: Simplify right side
    117,769.05x = 10,854,010,433.14
  5. Step 5: Solve for x
    x = 10,854,010,433.14/117,769.05
  6. Step 6: Final answer
    x = 92,163.52

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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.