Finding the Fourth Proportional to 122.44, 168.84 and 80.97
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Solution
The fourth proportional to 122.44, 168.84 and 80.97 is: 111.65
Step by Step Solution
- Step 1: Write the proportion equation
122.44 : 168.84 = 80.97 : x - Step 2: Convert to fraction form
122.44/168.84 = 80.97/x - Step 3: Cross multiply
122.44x = 168.84 × 80.97 - Step 4: Simplify right side
122.44x = 13,670.97 - Step 5: Solve for x
x = 13,670.97/122.44 - Step 6: Final answer
x = 111.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.