Home / 120,861.70-181,292.55-107,383.30

Finding the Fourth Proportional to 120,861.70, 181,292.55 and 107,383.30

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Solution

The fourth proportional to 120,861.70, 181,292.55 and 107,383.30 is: 161,074.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,861.70 : 181,292.55 = 107,383.30 : x
  2. Step 2: Convert to fraction form
    120,861.70/181,292.55 = 107,383.30/x
  3. Step 3: Cross multiply
    120,861.70x = 181,292.55 × 107,383.30
  4. Step 4: Simplify right side
    120,861.70x = 19,467,792,284.42
  5. Step 5: Solve for x
    x = 19,467,792,284.42/120,861.70
  6. Step 6: Final answer
    x = 161,074.95

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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.