Finding the Fourth Proportional to 126,463.64, 189,639.30 and 67,286.84
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Solution
The fourth proportional to 126,463.64, 189,639.30 and 67,286.84 is: 100,900.38
Step by Step Solution
- Step 1: Write the proportion equation
126,463.64 : 189,639.30 = 67,286.84 : x - Step 2: Convert to fraction form
126,463.64/189,639.30 = 67,286.84/x - Step 3: Cross multiply
126,463.64x = 189,639.30 × 67,286.84 - Step 4: Simplify right side
126,463.64x = 12,760,229,236.81 - Step 5: Solve for x
x = 12,760,229,236.81/126,463.64 - Step 6: Final answer
x = 100,900.38
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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.