Finding the Fourth Proportional to 129,986.20, 194,687.70 and 106,658.20
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Solution
The fourth proportional to 129,986.20, 194,687.70 and 106,658.20 is: 159,748.03
Step by Step Solution
- Step 1: Write the proportion equation
129,986.20 : 194,687.70 = 106,658.20 : x - Step 2: Convert to fraction form
129,986.20/194,687.70 = 106,658.20/x - Step 3: Cross multiply
129,986.20x = 194,687.70 × 106,658.20 - Step 4: Simplify right side
129,986.20x = 20,765,039,644.14 - Step 5: Solve for x
x = 20,765,039,644.14/129,986.20 - Step 6: Final answer
x = 159,748.03
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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.