Finding the Fourth Proportional to 121.75, 183.57 and 97.99
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Solution
The fourth proportional to 121.75, 183.57 and 97.99 is: 147.74
Step by Step Solution
- Step 1: Write the proportion equation
121.75 : 183.57 = 97.99 : x - Step 2: Convert to fraction form
121.75/183.57 = 97.99/x - Step 3: Cross multiply
121.75x = 183.57 × 97.99 - Step 4: Simplify right side
121.75x = 17,987.53 - Step 5: Solve for x
x = 17,987.53/121.75 - Step 6: Final answer
x = 147.74
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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.