Finding the Fourth Proportional to 112.52, 168.84 and 61.18
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Solution
The fourth proportional to 112.52, 168.84 and 61.18 is: 91.80
Step by Step Solution
- Step 1: Write the proportion equation
112.52 : 168.84 = 61.18 : x - Step 2: Convert to fraction form
112.52/168.84 = 61.18/x - Step 3: Cross multiply
112.52x = 168.84 × 61.18 - Step 4: Simplify right side
112.52x = 10,329.63 - Step 5: Solve for x
x = 10,329.63/112.52 - Step 6: Final answer
x = 91.80
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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.