Finding the Fourth Proportional to 129,770.88, 194,685.14 and 39,826.09
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Solution
The fourth proportional to 129,770.88, 194,685.14 and 39,826.09 is: 59,747.98
Step by Step Solution
- Step 1: Write the proportion equation
129,770.88 : 194,685.14 = 39,826.09 : x - Step 2: Convert to fraction form
129,770.88/194,685.14 = 39,826.09/x - Step 3: Cross multiply
129,770.88x = 194,685.14 × 39,826.09 - Step 4: Simplify right side
129,770.88x = 7,753,547,907.30 - Step 5: Solve for x
x = 7,753,547,907.30/129,770.88 - Step 6: Final answer
x = 59,747.98
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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.