Finding the Fourth Proportional to 161.19, 241.62 and 87.99
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Solution
The fourth proportional to 161.19, 241.62 and 87.99 is: 131.89
Step by Step Solution
- Step 1: Write the proportion equation
161.19 : 241.62 = 87.99 : x - Step 2: Convert to fraction form
161.19/241.62 = 87.99/x - Step 3: Cross multiply
161.19x = 241.62 × 87.99 - Step 4: Simplify right side
161.19x = 21,260.14 - Step 5: Solve for x
x = 21,260.14/161.19 - Step 6: Final answer
x = 131.89
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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.