Finding the Fourth Proportional to 129,750.20, 194,610.90 and 106,335.80
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Solution
The fourth proportional to 129,750.20, 194,610.90 and 106,335.80 is: 159,491.90
Step by Step Solution
- Step 1: Write the proportion equation
129,750.20 : 194,610.90 = 106,335.80 : x - Step 2: Convert to fraction form
129,750.20/194,610.90 = 106,335.80/x - Step 3: Cross multiply
129,750.20x = 194,610.90 × 106,335.80 - Step 4: Simplify right side
129,750.20x = 20,694,105,740.22 - Step 5: Solve for x
x = 20,694,105,740.22/129,750.20 - Step 6: Final answer
x = 159,491.90
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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.