Home / 205,979.30-309,163.35-127,247.30

Finding the Fourth Proportional to 205,979.30, 309,163.35 and 127,247.30

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Solution

The fourth proportional to 205,979.30, 309,163.35 and 127,247.30 is: 190,991.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,979.30 : 309,163.35 = 127,247.30 : x
  2. Step 2: Convert to fraction form
    205,979.30/309,163.35 = 127,247.30/x
  3. Step 3: Cross multiply
    205,979.30x = 309,163.35 × 127,247.30
  4. Step 4: Simplify right side
    205,979.30x = 39,340,201,546.46
  5. Step 5: Solve for x
    x = 39,340,201,546.46/205,979.30
  6. Step 6: Final answer
    x = 190,991.04

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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.