Finding the Fourth Proportional to 126,687.06, 189,651.96 and 76,615.70
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Solution
The fourth proportional to 126,687.06, 189,651.96 and 76,615.70 is: 114,694.56
Step by Step Solution
- Step 1: Write the proportion equation
126,687.06 : 189,651.96 = 76,615.70 : x - Step 2: Convert to fraction form
126,687.06/189,651.96 = 76,615.70/x - Step 3: Cross multiply
126,687.06x = 189,651.96 × 76,615.70 - Step 4: Simplify right side
126,687.06x = 14,530,316,723.51 - Step 5: Solve for x
x = 14,530,316,723.51/126,687.06 - Step 6: Final answer
x = 114,694.56
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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.