Finding the Fourth Proportional to 112.17, 168.30 and 73.53
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Solution
The fourth proportional to 112.17, 168.30 and 73.53 is: 110.32
Step by Step Solution
- Step 1: Write the proportion equation
112.17 : 168.30 = 73.53 : x - Step 2: Convert to fraction form
112.17/168.30 = 73.53/x - Step 3: Cross multiply
112.17x = 168.30 × 73.53 - Step 4: Simplify right side
112.17x = 12,375.10 - Step 5: Solve for x
x = 12,375.10/112.17 - Step 6: Final answer
x = 110.32
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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.