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Finding the Fourth Proportional to 165,288.60, 248,163.30 and 103,080.60

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Solution

The fourth proportional to 165,288.60, 248,163.30 and 103,080.60 is: 154,764.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,288.60 : 248,163.30 = 103,080.60 : x
  2. Step 2: Convert to fraction form
    165,288.60/248,163.30 = 103,080.60/x
  3. Step 3: Cross multiply
    165,288.60x = 248,163.30 × 103,080.60
  4. Step 4: Simplify right side
    165,288.60x = 25,580,821,861.98
  5. Step 5: Solve for x
    x = 25,580,821,861.98/165,288.60
  6. Step 6: Final answer
    x = 154,764.59

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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.