Finding the Fourth Proportional to 161.23, 241.74 and 84.21
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Solution
The fourth proportional to 161.23, 241.74 and 84.21 is: 126.26
Step by Step Solution
- Step 1: Write the proportion equation
161.23 : 241.74 = 84.21 : x - Step 2: Convert to fraction form
161.23/241.74 = 84.21/x - Step 3: Cross multiply
161.23x = 241.74 × 84.21 - Step 4: Simplify right side
161.23x = 20,356.93 - Step 5: Solve for x
x = 20,356.93/161.23 - Step 6: Final answer
x = 126.26
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.