Finding the Fourth Proportional to 121.08, 181.28 and 106.08
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Solution
The fourth proportional to 121.08, 181.28 and 106.08 is: 158.82
Step by Step Solution
- Step 1: Write the proportion equation
121.08 : 181.28 = 106.08 : x - Step 2: Convert to fraction form
121.08/181.28 = 106.08/x - Step 3: Cross multiply
121.08x = 181.28 × 106.08 - Step 4: Simplify right side
121.08x = 19,230.18 - Step 5: Solve for x
x = 19,230.18/121.08 - Step 6: Final answer
x = 158.82
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.