Finding the Fourth Proportional to 121.53, 181.99 and 102.23
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Solution
The fourth proportional to 121.53, 181.99 and 102.23 is: 153.08
Step by Step Solution
- Step 1: Write the proportion equation
121.53 : 181.99 = 102.23 : x - Step 2: Convert to fraction form
121.53/181.99 = 102.23/x - Step 3: Cross multiply
121.53x = 181.99 × 102.23 - Step 4: Simplify right side
121.53x = 18,604.74 - Step 5: Solve for x
x = 18,604.74/121.53 - Step 6: Final answer
x = 153.08
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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.