Finding the Fourth Proportional to 161.19, 222.45 and 98.99
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Solution
The fourth proportional to 161.19, 222.45 and 98.99 is: 136.61
Step by Step Solution
- Step 1: Write the proportion equation
161.19 : 222.45 = 98.99 : x - Step 2: Convert to fraction form
161.19/222.45 = 98.99/x - Step 3: Cross multiply
161.19x = 222.45 × 98.99 - Step 4: Simplify right side
161.19x = 22,019.68 - Step 5: Solve for x
x = 22,019.68/161.19 - Step 6: Final answer
x = 136.61
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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.