Finding the Fourth Proportional to 120.93, 166.73 and 84.10
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Solution
The fourth proportional to 120.93, 166.73 and 84.10 is: 115.95
Step by Step Solution
- Step 1: Write the proportion equation
120.93 : 166.73 = 84.10 : x - Step 2: Convert to fraction form
120.93/166.73 = 84.10/x - Step 3: Cross multiply
120.93x = 166.73 × 84.10 - Step 4: Simplify right side
120.93x = 14,021.99 - Step 5: Solve for x
x = 14,021.99/120.93 - Step 6: Final answer
x = 115.95
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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.