Finding the Fourth Proportional to 147.81, 221.18 and 92.96
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Solution
The fourth proportional to 147.81, 221.18 and 92.96 is: 139.09
Step by Step Solution
- Step 1: Write the proportion equation
147.81 : 221.18 = 92.96 : x - Step 2: Convert to fraction form
147.81/221.18 = 92.96/x - Step 3: Cross multiply
147.81x = 221.18 × 92.96 - Step 4: Simplify right side
147.81x = 20,559.32 - Step 5: Solve for x
x = 20,559.32/147.81 - Step 6: Final answer
x = 139.09
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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.