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Finding the Fourth Proportional to 165,687.60, 248,285.64 and 121,696.56

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Solution

The fourth proportional to 165,687.60, 248,285.64 and 121,696.56 is: 182,364.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,687.60 : 248,285.64 = 121,696.56 : x
  2. Step 2: Convert to fraction form
    165,687.60/248,285.64 = 121,696.56/x
  3. Step 3: Cross multiply
    165,687.60x = 248,285.64 × 121,696.56
  4. Step 4: Simplify right side
    165,687.60x = 30,215,508,285.40
  5. Step 5: Solve for x
    x = 30,215,508,285.40/165,687.60
  6. Step 6: Final answer
    x = 182,364.33

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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.