Finding the Fourth Proportional to 135.33, 202.68 and 81.18
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Solution
The fourth proportional to 135.33, 202.68 and 81.18 is: 121.58
Step by Step Solution
- Step 1: Write the proportion equation
135.33 : 202.68 = 81.18 : x - Step 2: Convert to fraction form
135.33/202.68 = 81.18/x - Step 3: Cross multiply
135.33x = 202.68 × 81.18 - Step 4: Simplify right side
135.33x = 16,453.56 - Step 5: Solve for x
x = 16,453.56/135.33 - Step 6: Final answer
x = 121.58
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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.