Finding the Fourth Proportional to 129,764.40, 194,646.60 and 121,891.20
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Solution
The fourth proportional to 129,764.40, 194,646.60 and 121,891.20 is: 182,836.80
Step by Step Solution
- Step 1: Write the proportion equation
129,764.40 : 194,646.60 = 121,891.20 : x - Step 2: Convert to fraction form
129,764.40/194,646.60 = 121,891.20/x - Step 3: Cross multiply
129,764.40x = 194,646.60 × 121,891.20 - Step 4: Simplify right side
129,764.40x = 23,725,707,649.92 - Step 5: Solve for x
x = 23,725,707,649.92/129,764.40 - Step 6: Final answer
x = 182,836.80
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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.