Finding the Fourth Proportional to 126.80, 175.05 and 93.99
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Solution
The fourth proportional to 126.80, 175.05 and 93.99 is: 129.76
Step by Step Solution
- Step 1: Write the proportion equation
126.80 : 175.05 = 93.99 : x - Step 2: Convert to fraction form
126.80/175.05 = 93.99/x - Step 3: Cross multiply
126.80x = 175.05 × 93.99 - Step 4: Simplify right side
126.80x = 16,452.95 - Step 5: Solve for x
x = 16,452.95/126.80 - Step 6: Final answer
x = 129.76
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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.