Home / 123,847.38-170,905.55-72,858.69

Finding the Fourth Proportional to 123,847.38, 170,905.55 and 72,858.69

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Solution

The fourth proportional to 123,847.38, 170,905.55 and 72,858.69 is: 100,542.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,847.38 : 170,905.55 = 72,858.69 : x
  2. Step 2: Convert to fraction form
    123,847.38/170,905.55 = 72,858.69/x
  3. Step 3: Cross multiply
    123,847.38x = 170,905.55 × 72,858.69
  4. Step 4: Simplify right side
    123,847.38x = 12,451,954,122.44
  5. Step 5: Solve for x
    x = 12,451,954,122.44/123,847.38
  6. Step 6: Final answer
    x = 100,542.73

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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.