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Finding the Fourth Proportional to 168,378.17, 252,737.96 and 84,198.51

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Solution

The fourth proportional to 168,378.17, 252,737.96 and 84,198.51 is: 126,383.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,378.17 : 252,737.96 = 84,198.51 : x
  2. Step 2: Convert to fraction form
    168,378.17/252,737.96 = 84,198.51/x
  3. Step 3: Cross multiply
    168,378.17x = 252,737.96 × 84,198.51
  4. Step 4: Simplify right side
    168,378.17x = 21,280,159,231.45
  5. Step 5: Solve for x
    x = 21,280,159,231.45/168,378.17
  6. Step 6: Final answer
    x = 126,383.13

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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.