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Finding the Fourth Proportional to 110,720.40, 166,080.60 and 40,590.60

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Solution

The fourth proportional to 110,720.40, 166,080.60 and 40,590.60 is: 60,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,720.40 : 166,080.60 = 40,590.60 : x
  2. Step 2: Convert to fraction form
    110,720.40/166,080.60 = 40,590.60/x
  3. Step 3: Cross multiply
    110,720.40x = 166,080.60 × 40,590.60
  4. Step 4: Simplify right side
    110,720.40x = 6,741,311,202.36
  5. Step 5: Solve for x
    x = 6,741,311,202.36/110,720.40
  6. Step 6: Final answer
    x = 60,885.90

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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.