Home / 80,190.38-120,170.54-45,056.10

Finding the Fourth Proportional to 80,190.38, 120,170.54 and 45,056.10

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Solution

The fourth proportional to 80,190.38, 120,170.54 and 45,056.10 is: 67,519.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,190.38 : 120,170.54 = 45,056.10 : x
  2. Step 2: Convert to fraction form
    80,190.38/120,170.54 = 45,056.10/x
  3. Step 3: Cross multiply
    80,190.38x = 120,170.54 × 45,056.10
  4. Step 4: Simplify right side
    80,190.38x = 5,414,415,867.29
  5. Step 5: Solve for x
    x = 5,414,415,867.29/80,190.38
  6. Step 6: Final answer
    x = 67,519.52

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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.