Finding the Fourth Proportional to 120.96, 166.92 and 84.08
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Solution
The fourth proportional to 120.96, 166.92 and 84.08 is: 116.03
Step by Step Solution
- Step 1: Write the proportion equation
120.96 : 166.92 = 84.08 : x - Step 2: Convert to fraction form
120.96/166.92 = 84.08/x - Step 3: Cross multiply
120.96x = 166.92 × 84.08 - Step 4: Simplify right side
120.96x = 14,034.63 - Step 5: Solve for x
x = 14,034.63/120.96 - Step 6: Final answer
x = 116.03
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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.