Home / 193,391.83-290,016.87-66,999.43

Finding the Fourth Proportional to 193,391.83, 290,016.87 and 66,999.43

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Solution

The fourth proportional to 193,391.83, 290,016.87 and 66,999.43 is: 100,474.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,391.83 : 290,016.87 = 66,999.43 : x
  2. Step 2: Convert to fraction form
    193,391.83/290,016.87 = 66,999.43/x
  3. Step 3: Cross multiply
    193,391.83x = 290,016.87 × 66,999.43
  4. Step 4: Simplify right side
    193,391.83x = 19,430,964,980.38
  5. Step 5: Solve for x
    x = 19,430,964,980.38/193,391.83
  6. Step 6: Final answer
    x = 100,474.59

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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.