Finding the Fourth Proportional to 126,034.81, 189,107.81 and 66,855.97
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Solution
The fourth proportional to 126,034.81, 189,107.81 and 66,855.97 is: 100,313.45
Step by Step Solution
- Step 1: Write the proportion equation
126,034.81 : 189,107.81 = 66,855.97 : x - Step 2: Convert to fraction form
126,034.81/189,107.81 = 66,855.97/x - Step 3: Cross multiply
126,034.81x = 189,107.81 × 66,855.97 - Step 4: Simplify right side
126,034.81x = 12,642,986,072.13 - Step 5: Solve for x
x = 12,642,986,072.13/126,034.81 - Step 6: Final answer
x = 100,313.45
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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.