Finding the Fourth Proportional to 141.21, 195.21 and 117.99
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Solution
The fourth proportional to 141.21, 195.21 and 117.99 is: 163.11
Step by Step Solution
- Step 1: Write the proportion equation
141.21 : 195.21 = 117.99 : x - Step 2: Convert to fraction form
141.21/195.21 = 117.99/x - Step 3: Cross multiply
141.21x = 195.21 × 117.99 - Step 4: Simplify right side
141.21x = 23,032.83 - Step 5: Solve for x
x = 23,032.83/141.21 - Step 6: Final answer
x = 163.11
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.