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Finding the Fourth Proportional to 168,221.62, 251,981.92 and 83,725.56

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Solution

The fourth proportional to 168,221.62, 251,981.92 and 83,725.56 is: 125,413.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,221.62 : 251,981.92 = 83,725.56 : x
  2. Step 2: Convert to fraction form
    168,221.62/251,981.92 = 83,725.56/x
  3. Step 3: Cross multiply
    168,221.62x = 251,981.92 × 83,725.56
  4. Step 4: Simplify right side
    168,221.62x = 21,097,327,361.88
  5. Step 5: Solve for x
    x = 21,097,327,361.88/168,221.62
  6. Step 6: Final answer
    x = 125,413.89

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1.5x scale

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.