Finding the Fourth Proportional to 120.89, 181.17 and 59.99
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Solution
The fourth proportional to 120.89, 181.17 and 59.99 is: 89.89
Step by Step Solution
- Step 1: Write the proportion equation
120.89 : 181.17 = 59.99 : x - Step 2: Convert to fraction form
120.89/181.17 = 59.99/x - Step 3: Cross multiply
120.89x = 181.17 × 59.99 - Step 4: Simplify right side
120.89x = 10,867.48 - Step 5: Solve for x
x = 10,867.48/120.89 - Step 6: Final answer
x = 89.89
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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.