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Finding the Fourth Proportional to 110,869.80, 166,304.70 and 109,120.20

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Solution

The fourth proportional to 110,869.80, 166,304.70 and 109,120.20 is: 163,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,869.80 : 166,304.70 = 109,120.20 : x
  2. Step 2: Convert to fraction form
    110,869.80/166,304.70 = 109,120.20/x
  3. Step 3: Cross multiply
    110,869.80x = 166,304.70 × 109,120.20
  4. Step 4: Simplify right side
    110,869.80x = 18,147,202,124.94
  5. Step 5: Solve for x
    x = 18,147,202,124.94/110,869.80
  6. Step 6: Final answer
    x = 163,680.30

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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.