Finding the Fourth Proportional to 161.18, 222.49 and 108.75
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Solution
The fourth proportional to 161.18, 222.49 and 108.75 is: 150.12
Step by Step Solution
- Step 1: Write the proportion equation
161.18 : 222.49 = 108.75 : x - Step 2: Convert to fraction form
161.18/222.49 = 108.75/x - Step 3: Cross multiply
161.18x = 222.49 × 108.75 - Step 4: Simplify right side
161.18x = 24,195.24 - Step 5: Solve for x
x = 24,195.24/161.18 - Step 6: Final answer
x = 150.12
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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.