Finding the Fourth Proportional to 121.44, 181.99 and 117.93
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Solution
The fourth proportional to 121.44, 181.99 and 117.93 is: 176.72
Step by Step Solution
- Step 1: Write the proportion equation
121.44 : 181.99 = 117.93 : x - Step 2: Convert to fraction form
121.44/181.99 = 117.93/x - Step 3: Cross multiply
121.44x = 181.99 × 117.93 - Step 4: Simplify right side
121.44x = 21,460.58 - Step 5: Solve for x
x = 21,460.58/121.44 - Step 6: Final answer
x = 176.72
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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.