Home / 213,765.21-294,910.29-123,072.57

Finding the Fourth Proportional to 213,765.21, 294,910.29 and 123,072.57

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Solution

The fourth proportional to 213,765.21, 294,910.29 and 123,072.57 is: 169,790.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,765.21 : 294,910.29 = 123,072.57 : x
  2. Step 2: Convert to fraction form
    213,765.21/294,910.29 = 123,072.57/x
  3. Step 3: Cross multiply
    213,765.21x = 294,910.29 × 123,072.57
  4. Step 4: Simplify right side
    213,765.21x = 36,295,367,309.75
  5. Step 5: Solve for x
    x = 36,295,367,309.75/213,765.21
  6. Step 6: Final answer
    x = 169,790.81

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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.