Home / 133,091.41-199,538.69-80,489.20

Finding the Fourth Proportional to 133,091.41, 199,538.69 and 80,489.20

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Solution

The fourth proportional to 133,091.41, 199,538.69 and 80,489.20 is: 120,674.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,091.41 : 199,538.69 = 80,489.20 : x
  2. Step 2: Convert to fraction form
    133,091.41/199,538.69 = 80,489.20/x
  3. Step 3: Cross multiply
    133,091.41x = 199,538.69 × 80,489.20
  4. Step 4: Simplify right side
    133,091.41x = 16,060,709,527.15
  5. Step 5: Solve for x
    x = 16,060,709,527.15/133,091.41
  6. Step 6: Final answer
    x = 120,674.28

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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.