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Finding the Fourth Proportional to 110,806.20, 166,209.30 and 66,410.10

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Solution

The fourth proportional to 110,806.20, 166,209.30 and 66,410.10 is: 99,615.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,806.20 : 166,209.30 = 66,410.10 : x
  2. Step 2: Convert to fraction form
    110,806.20/166,209.30 = 66,410.10/x
  3. Step 3: Cross multiply
    110,806.20x = 166,209.30 × 66,410.10
  4. Step 4: Simplify right side
    110,806.20x = 11,037,976,233.93
  5. Step 5: Solve for x
    x = 11,037,976,233.93/110,806.20
  6. Step 6: Final answer
    x = 99,615.15

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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.