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Finding the Fourth Proportional to 104,365.92, 143,969.82 and 74,163.44

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Solution

The fourth proportional to 104,365.92, 143,969.82 and 74,163.44 is: 102,306.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,365.92 : 143,969.82 = 74,163.44 : x
  2. Step 2: Convert to fraction form
    104,365.92/143,969.82 = 74,163.44/x
  3. Step 3: Cross multiply
    104,365.92x = 143,969.82 × 74,163.44
  4. Step 4: Simplify right side
    104,365.92x = 10,677,297,107.38
  5. Step 5: Solve for x
    x = 10,677,297,107.38/104,365.92
  6. Step 6: Final answer
    x = 102,306.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.