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Finding the Fourth Proportional to 109,396.73, 150,976.37 and 61,653.31

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Solution

The fourth proportional to 109,396.73, 150,976.37 and 61,653.31 is: 85,086.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,396.73 : 150,976.37 = 61,653.31 : x
  2. Step 2: Convert to fraction form
    109,396.73/150,976.37 = 61,653.31/x
  3. Step 3: Cross multiply
    109,396.73x = 150,976.37 × 61,653.31
  4. Step 4: Simplify right side
    109,396.73x = 9,308,192,942.28
  5. Step 5: Solve for x
    x = 9,308,192,942.28/109,396.73
  6. Step 6: Final answer
    x = 85,086.57

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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.