Finding the Fourth Proportional to 126,471.48, 189,853.80 and 73,918.68
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Solution
The fourth proportional to 126,471.48, 189,853.80 and 73,918.68 is: 110,963.69
Step by Step Solution
- Step 1: Write the proportion equation
126,471.48 : 189,853.80 = 73,918.68 : x - Step 2: Convert to fraction form
126,471.48/189,853.80 = 73,918.68/x - Step 3: Cross multiply
126,471.48x = 189,853.80 × 73,918.68 - Step 4: Simplify right side
126,471.48x = 14,033,742,288.98 - Step 5: Solve for x
x = 14,033,742,288.98/126,471.48 - Step 6: Final answer
x = 110,963.69
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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.