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Finding the Fourth Proportional to 110,439.40, 165,788.70 and 109,661.80

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Solution

The fourth proportional to 110,439.40, 165,788.70 and 109,661.80 is: 164,621.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,439.40 : 165,788.70 = 109,661.80 : x
  2. Step 2: Convert to fraction form
    110,439.40/165,788.70 = 109,661.80/x
  3. Step 3: Cross multiply
    110,439.40x = 165,788.70 × 109,661.80
  4. Step 4: Simplify right side
    110,439.40x = 18,180,687,261.66
  5. Step 5: Solve for x
    x = 18,180,687,261.66/110,439.40
  6. Step 6: Final answer
    x = 164,621.39

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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.