Finding the Fourth Proportional to 132,689.80, 199,034.70 and 80,201.80
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Solution
The fourth proportional to 132,689.80, 199,034.70 and 80,201.80 is: 120,302.70
Step by Step Solution
- Step 1: Write the proportion equation
132,689.80 : 199,034.70 = 80,201.80 : x - Step 2: Convert to fraction form
132,689.80/199,034.70 = 80,201.80/x - Step 3: Cross multiply
132,689.80x = 199,034.70 × 80,201.80 - Step 4: Simplify right side
132,689.80x = 15,962,941,202.46 - Step 5: Solve for x
x = 15,962,941,202.46/132,689.80 - Step 6: Final answer
x = 120,302.70
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1.5x scale
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.