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Finding the Fourth Proportional to 274,693.06, 412,103.49 and 85,143.37

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Solution

The fourth proportional to 274,693.06, 412,103.49 and 85,143.37 is: 127,734.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,693.06 : 412,103.49 = 85,143.37 : x
  2. Step 2: Convert to fraction form
    274,693.06/412,103.49 = 85,143.37/x
  3. Step 3: Cross multiply
    274,693.06x = 412,103.49 × 85,143.37
  4. Step 4: Simplify right side
    274,693.06x = 35,087,879,927.36
  5. Step 5: Solve for x
    x = 35,087,879,927.36/274,693.06
  6. Step 6: Final answer
    x = 127,734.86

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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.