Finding the Fourth Proportional to 129,425.40, 194,137.97 and 40,686.66
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Solution
The fourth proportional to 129,425.40, 194,137.97 and 40,686.66 is: 61,029.95
Step by Step Solution
- Step 1: Write the proportion equation
129,425.40 : 194,137.97 = 40,686.66 : x - Step 2: Convert to fraction form
129,425.40/194,137.97 = 40,686.66/x - Step 3: Cross multiply
129,425.40x = 194,137.97 × 40,686.66 - Step 4: Simplify right side
129,425.40x = 7,898,825,375.05 - Step 5: Solve for x
x = 7,898,825,375.05/129,425.40 - Step 6: Final answer
x = 61,029.95
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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.