Finding the Fourth Proportional to 221,695.09, 305,939.49 and 126,201.69
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Solution
The fourth proportional to 221,695.09, 305,939.49 and 126,201.69 is: 174,158.48
Step by Step Solution
- Step 1: Write the proportion equation
221,695.09 : 305,939.49 = 126,201.69 : x - Step 2: Convert to fraction form
221,695.09/305,939.49 = 126,201.69/x - Step 3: Cross multiply
221,695.09x = 305,939.49 × 126,201.69 - Step 4: Simplify right side
221,695.09x = 38,610,080,675.74 - Step 5: Solve for x
x = 38,610,080,675.74/221,695.09 - Step 6: Final answer
x = 174,158.48
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.