Finding the Fourth Proportional to 121.53, 167.49 and 93.99
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Solution
The fourth proportional to 121.53, 167.49 and 93.99 is: 129.53
Step by Step Solution
- Step 1: Write the proportion equation
121.53 : 167.49 = 93.99 : x - Step 2: Convert to fraction form
121.53/167.49 = 93.99/x - Step 3: Cross multiply
121.53x = 167.49 × 93.99 - Step 4: Simplify right side
121.53x = 15,742.39 - Step 5: Solve for x
x = 15,742.39/121.53 - Step 6: Final answer
x = 129.53
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.