Finding the Fourth Proportional to 141.21, 194.76 and 102.02
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Solution
The fourth proportional to 141.21, 194.76 and 102.02 is: 140.70
Step by Step Solution
- Step 1: Write the proportion equation
141.21 : 194.76 = 102.02 : x - Step 2: Convert to fraction form
141.21/194.76 = 102.02/x - Step 3: Cross multiply
141.21x = 194.76 × 102.02 - Step 4: Simplify right side
141.21x = 19,868.44 - Step 5: Solve for x
x = 19,868.44/141.21 - Step 6: Final answer
x = 140.70
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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.