Finding the Fourth Proportional to 135.26, 202.92 and 81.18
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Solution
The fourth proportional to 135.26, 202.92 and 81.18 is: 121.79
Step by Step Solution
- Step 1: Write the proportion equation
135.26 : 202.92 = 81.18 : x - Step 2: Convert to fraction form
135.26/202.92 = 81.18/x - Step 3: Cross multiply
135.26x = 202.92 × 81.18 - Step 4: Simplify right side
135.26x = 16,473.05 - Step 5: Solve for x
x = 16,473.05/135.26 - Step 6: Final answer
x = 121.79
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.