Finding the Fourth Proportional to 138,122.70, 206,033.84 and 135,836.88
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Solution
The fourth proportional to 138,122.70, 206,033.84 and 135,836.88 is: 202,624.14
Step by Step Solution
- Step 1: Write the proportion equation
138,122.70 : 206,033.84 = 135,836.88 : x - Step 2: Convert to fraction form
138,122.70/206,033.84 = 135,836.88/x - Step 3: Cross multiply
138,122.70x = 206,033.84 × 135,836.88 - Step 4: Simplify right side
138,122.70x = 27,986,993,320.83 - Step 5: Solve for x
x = 27,986,993,320.83/138,122.70 - Step 6: Final answer
x = 202,624.14
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.