Finding the Fourth Proportional to 132.54, 198.99 and 121.80
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Solution
The fourth proportional to 132.54, 198.99 and 121.80 is: 182.88
Step by Step Solution
- Step 1: Write the proportion equation
132.54 : 198.99 = 121.80 : x - Step 2: Convert to fraction form
132.54/198.99 = 121.80/x - Step 3: Cross multiply
132.54x = 198.99 × 121.80 - Step 4: Simplify right side
132.54x = 24,237.73 - Step 5: Solve for x
x = 24,237.73/132.54 - Step 6: Final answer
x = 182.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.