Finding the Fourth Proportional to 126,331.69, 189,283.42 and 76,306.68
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Solution
The fourth proportional to 126,331.69, 189,283.42 and 76,306.68 is: 114,330.69
Step by Step Solution
- Step 1: Write the proportion equation
126,331.69 : 189,283.42 = 76,306.68 : x - Step 2: Convert to fraction form
126,331.69/189,283.42 = 76,306.68/x - Step 3: Cross multiply
126,331.69x = 189,283.42 × 76,306.68 - Step 4: Simplify right side
126,331.69x = 14,443,589,359.25 - Step 5: Solve for x
x = 14,443,589,359.25/126,331.69 - Step 6: Final answer
x = 114,330.69
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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.