Finding the Fourth Proportional to 88.26, 132.26 and 81.19
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Solution
The fourth proportional to 88.26, 132.26 and 81.19 is: 121.67
Step by Step Solution
- Step 1: Write the proportion equation
88.26 : 132.26 = 81.19 : x - Step 2: Convert to fraction form
88.26/132.26 = 81.19/x - Step 3: Cross multiply
88.26x = 132.26 × 81.19 - Step 4: Simplify right side
88.26x = 10,738.19 - Step 5: Solve for x
x = 10,738.19/88.26 - Step 6: Final answer
x = 121.67
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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.