Home / 168,155.62-231,975.56-100,133.84

Finding the Fourth Proportional to 168,155.62, 231,975.56 and 100,133.84

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Solution

The fourth proportional to 168,155.62, 231,975.56 and 100,133.84 is: 138,137.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,155.62 : 231,975.56 = 100,133.84 : x
  2. Step 2: Convert to fraction form
    168,155.62/231,975.56 = 100,133.84/x
  3. Step 3: Cross multiply
    168,155.62x = 231,975.56 × 100,133.84
  4. Step 4: Simplify right side
    168,155.62x = 23,228,603,608.95
  5. Step 5: Solve for x
    x = 23,228,603,608.95/168,155.62
  6. Step 6: Final answer
    x = 138,137.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.