Finding the Fourth Proportional to 135.41, 186.91 and 80.17
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Solution
The fourth proportional to 135.41, 186.91 and 80.17 is: 110.66
Step by Step Solution
- Step 1: Write the proportion equation
135.41 : 186.91 = 80.17 : x - Step 2: Convert to fraction form
135.41/186.91 = 80.17/x - Step 3: Cross multiply
135.41x = 186.91 × 80.17 - Step 4: Simplify right side
135.41x = 14,983.91 - Step 5: Solve for x
x = 14,983.91/135.41 - Step 6: Final answer
x = 110.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.