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Finding the Fourth Proportional to 110,967.60, 166,629.60 and 102,781.20

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Solution

The fourth proportional to 110,967.60, 166,629.60 and 102,781.20 is: 154,336.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,967.60 : 166,629.60 = 102,781.20 : x
  2. Step 2: Convert to fraction form
    110,967.60/166,629.60 = 102,781.20/x
  3. Step 3: Cross multiply
    110,967.60x = 166,629.60 × 102,781.20
  4. Step 4: Simplify right side
    110,967.60x = 17,126,390,243.52
  5. Step 5: Solve for x
    x = 17,126,390,243.52/110,967.60
  6. Step 6: Final answer
    x = 154,336.85

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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.