Finding the Fourth Proportional to 141.12, 193.47 and 138.99
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Solution
The fourth proportional to 141.12, 193.47 and 138.99 is: 190.55
Step by Step Solution
- Step 1: Write the proportion equation
141.12 : 193.47 = 138.99 : x - Step 2: Convert to fraction form
141.12/193.47 = 138.99/x - Step 3: Cross multiply
141.12x = 193.47 × 138.99 - Step 4: Simplify right side
141.12x = 26,890.40 - Step 5: Solve for x
x = 26,890.40/141.12 - Step 6: Final answer
x = 190.55
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.