Home / 205,861.11-308,736.10-72,723.84

Finding the Fourth Proportional to 205,861.11, 308,736.10 and 72,723.84

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Solution

The fourth proportional to 205,861.11, 308,736.10 and 72,723.84 is: 109,066.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,861.11 : 308,736.10 = 72,723.84 : x
  2. Step 2: Convert to fraction form
    205,861.11/308,736.10 = 72,723.84/x
  3. Step 3: Cross multiply
    205,861.11x = 308,736.10 × 72,723.84
  4. Step 4: Simplify right side
    205,861.11x = 22,452,474,738.62
  5. Step 5: Solve for x
    x = 22,452,474,738.62/205,861.11
  6. Step 6: Final answer
    x = 109,066.13

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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.