Finding the Fourth Proportional to 161.19, 241.99 and 79.99
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Solution
The fourth proportional to 161.19, 241.99 and 79.99 is: 120.08
Step by Step Solution
- Step 1: Write the proportion equation
161.19 : 241.99 = 79.99 : x - Step 2: Convert to fraction form
161.19/241.99 = 79.99/x - Step 3: Cross multiply
161.19x = 241.99 × 79.99 - Step 4: Simplify right side
161.19x = 19,355.98 - Step 5: Solve for x
x = 19,355.98/161.19 - Step 6: Final answer
x = 120.08
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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.