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Finding the Fourth Proportional to 163,235.16, 225,286.50 and 91,619.10

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Solution

The fourth proportional to 163,235.16, 225,286.50 and 91,619.10 is: 126,446.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,235.16 : 225,286.50 = 91,619.10 : x
  2. Step 2: Convert to fraction form
    163,235.16/225,286.50 = 91,619.10/x
  3. Step 3: Cross multiply
    163,235.16x = 225,286.50 × 91,619.10
  4. Step 4: Simplify right side
    163,235.16x = 20,640,546,372.15
  5. Step 5: Solve for x
    x = 20,640,546,372.15/163,235.16
  6. Step 6: Final answer
    x = 126,446.69

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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.