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Finding the Fourth Proportional to 100,816.80, 151,273.80 and 71,170.80

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Solution

The fourth proportional to 100,816.80, 151,273.80 and 71,170.80 is: 106,790.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,816.80 : 151,273.80 = 71,170.80 : x
  2. Step 2: Convert to fraction form
    100,816.80/151,273.80 = 71,170.80/x
  3. Step 3: Cross multiply
    100,816.80x = 151,273.80 × 71,170.80
  4. Step 4: Simplify right side
    100,816.80x = 10,766,277,365.04
  5. Step 5: Solve for x
    x = 10,766,277,365.04/100,816.80
  6. Step 6: Final answer
    x = 106,790.51

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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.