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Finding the Fourth Proportional to 168,906.96, 253,421.64 and 79,029

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Solution

The fourth proportional to 168,906.96, 253,421.64 and 79,029 is: 118,572.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,906.96 : 253,421.64 = 79,029 : x
  2. Step 2: Convert to fraction form
    168,906.96/253,421.64 = 79,029/x
  3. Step 3: Cross multiply
    168,906.96x = 253,421.64 × 79,029
  4. Step 4: Simplify right side
    168,906.96x = 20,027,658,787.56
  5. Step 5: Solve for x
    x = 20,027,658,787.56/168,906.96
  6. Step 6: Final answer
    x = 118,572.13

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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.