Finding the Fourth Proportional to 132.99, 199.44 and 120.21
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Solution
The fourth proportional to 132.99, 199.44 and 120.21 is: 180.27
Step by Step Solution
- Step 1: Write the proportion equation
132.99 : 199.44 = 120.21 : x - Step 2: Convert to fraction form
132.99/199.44 = 120.21/x - Step 3: Cross multiply
132.99x = 199.44 × 120.21 - Step 4: Simplify right side
132.99x = 23,974.68 - Step 5: Solve for x
x = 23,974.68/132.99 - Step 6: Final answer
x = 180.27
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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.