Finding the Fourth Proportional to 129,868.20, 194,761.80 and 51,006.60
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Solution
The fourth proportional to 129,868.20, 194,761.80 and 51,006.60 is: 76,493.99
Step by Step Solution
- Step 1: Write the proportion equation
129,868.20 : 194,761.80 = 51,006.60 : x - Step 2: Convert to fraction form
129,868.20/194,761.80 = 51,006.60/x - Step 3: Cross multiply
129,868.20x = 194,761.80 × 51,006.60 - Step 4: Simplify right side
129,868.20x = 9,934,137,227.88 - Step 5: Solve for x
x = 9,934,137,227.88/129,868.20 - Step 6: Final answer
x = 76,493.99
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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.