Finding the Fourth Proportional to 111.77, 167.18 and 110.09
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Solution
The fourth proportional to 111.77, 167.18 and 110.09 is: 164.66
Step by Step Solution
- Step 1: Write the proportion equation
111.77 : 167.18 = 110.09 : x - Step 2: Convert to fraction form
111.77/167.18 = 110.09/x - Step 3: Cross multiply
111.77x = 167.18 × 110.09 - Step 4: Simplify right side
111.77x = 18,404.30 - Step 5: Solve for x
x = 18,404.30/111.77 - Step 6: Final answer
x = 164.66
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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.