Finding the Fourth Proportional to 135.97, 203.68 and 81.97
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Solution
The fourth proportional to 135.97, 203.68 and 81.97 is: 122.79
Step by Step Solution
- Step 1: Write the proportion equation
135.97 : 203.68 = 81.97 : x - Step 2: Convert to fraction form
135.97/203.68 = 81.97/x - Step 3: Cross multiply
135.97x = 203.68 × 81.97 - Step 4: Simplify right side
135.97x = 16,695.24 - Step 5: Solve for x
x = 16,695.24/135.97 - Step 6: Final answer
x = 122.79
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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.