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Finding the Fourth Proportional to 144,186.74, 198,976.29 and 80,522.90

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Solution

The fourth proportional to 144,186.74, 198,976.29 and 80,522.90 is: 111,120.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,186.74 : 198,976.29 = 80,522.90 : x
  2. Step 2: Convert to fraction form
    144,186.74/198,976.29 = 80,522.90/x
  3. Step 3: Cross multiply
    144,186.74x = 198,976.29 × 80,522.90
  4. Step 4: Simplify right side
    144,186.74x = 16,022,147,902.04
  5. Step 5: Solve for x
    x = 16,022,147,902.04/144,186.74
  6. Step 6: Final answer
    x = 111,120.81

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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.