Finding the Fourth Proportional to 129.99, 194.75 and 107.11
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Solution
The fourth proportional to 129.99, 194.75 and 107.11 is: 160.47
Step by Step Solution
- Step 1: Write the proportion equation
129.99 : 194.75 = 107.11 : x - Step 2: Convert to fraction form
129.99/194.75 = 107.11/x - Step 3: Cross multiply
129.99x = 194.75 × 107.11 - Step 4: Simplify right side
129.99x = 20,859.67 - Step 5: Solve for x
x = 20,859.67/129.99 - Step 6: Final answer
x = 160.47
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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.