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Finding the Fourth Proportional to 163,236.66, 225,288.57 and 91,620.60

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Solution

The fourth proportional to 163,236.66, 225,288.57 and 91,620.60 is: 126,448.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,236.66 : 225,288.57 = 91,620.60 : x
  2. Step 2: Convert to fraction form
    163,236.66/225,288.57 = 91,620.60/x
  3. Step 3: Cross multiply
    163,236.66x = 225,288.57 × 91,620.60
  4. Step 4: Simplify right side
    163,236.66x = 20,641,073,956.54
  5. Step 5: Solve for x
    x = 20,641,073,956.54/163,236.66
  6. Step 6: Final answer
    x = 126,448.76

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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.