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Finding the Fourth Proportional to 140,825.60, 211,353.60 and 136,217.60

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Solution

The fourth proportional to 140,825.60, 211,353.60 and 136,217.60 is: 204,437.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,825.60 : 211,353.60 = 136,217.60 : x
  2. Step 2: Convert to fraction form
    140,825.60/211,353.60 = 136,217.60/x
  3. Step 3: Cross multiply
    140,825.60x = 211,353.60 × 136,217.60
  4. Step 4: Simplify right side
    140,825.60x = 28,790,080,143.36
  5. Step 5: Solve for x
    x = 28,790,080,143.36/140,825.60
  6. Step 6: Final answer
    x = 204,437.83

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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.