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Finding the Fourth Proportional to 193,881.78, 290,800.80 and 67,500.72

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Solution

The fourth proportional to 193,881.78, 290,800.80 and 67,500.72 is: 101,243.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,881.78 : 290,800.80 = 67,500.72 : x
  2. Step 2: Convert to fraction form
    193,881.78/290,800.80 = 67,500.72/x
  3. Step 3: Cross multiply
    193,881.78x = 290,800.80 × 67,500.72
  4. Step 4: Simplify right side
    193,881.78x = 19,629,263,376.58
  5. Step 5: Solve for x
    x = 19,629,263,376.58/193,881.78
  6. Step 6: Final answer
    x = 101,243.47

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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.