Home / 193,708.20-290,516.04-81,390.54

Finding the Fourth Proportional to 193,708.20, 290,516.04 and 81,390.54

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Solution

The fourth proportional to 193,708.20, 290,516.04 and 81,390.54 is: 122,066.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,708.20 : 290,516.04 = 81,390.54 : x
  2. Step 2: Convert to fraction form
    193,708.20/290,516.04 = 81,390.54/x
  3. Step 3: Cross multiply
    193,708.20x = 290,516.04 × 81,390.54
  4. Step 4: Simplify right side
    193,708.20x = 23,645,257,374.26
  5. Step 5: Solve for x
    x = 23,645,257,374.26/193,708.20
  6. Step 6: Final answer
    x = 122,066.37

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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.