Finding the Fourth Proportional to 207,379.82, 311,119.12 and 67,138.44
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Solution
The fourth proportional to 207,379.82, 311,119.12 and 67,138.44 is: 100,723.65
Step by Step Solution
- Step 1: Write the proportion equation
207,379.82 : 311,119.12 = 67,138.44 : x - Step 2: Convert to fraction form
207,379.82/311,119.12 = 67,138.44/x - Step 3: Cross multiply
207,379.82x = 311,119.12 × 67,138.44 - Step 4: Simplify right side
207,379.82x = 20,888,052,370.97 - Step 5: Solve for x
x = 20,888,052,370.97/207,379.82 - Step 6: Final answer
x = 100,723.65
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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.