Finding the Fourth Proportional to 112.14, 167.99 and 84.77
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Solution
The fourth proportional to 112.14, 167.99 and 84.77 is: 126.98
Step by Step Solution
- Step 1: Write the proportion equation
112.14 : 167.99 = 84.77 : x - Step 2: Convert to fraction form
112.14/167.99 = 84.77/x - Step 3: Cross multiply
112.14x = 167.99 × 84.77 - Step 4: Simplify right side
112.14x = 14,239.25 - Step 5: Solve for x
x = 14,239.25/112.14 - Step 6: Final answer
x = 126.98
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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.