Finding the Fourth Proportional to 221,665.13, 305,899.82 and 126,177.96
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Solution
The fourth proportional to 221,665.13, 305,899.82 and 126,177.96 is: 174,126.69
Step by Step Solution
- Step 1: Write the proportion equation
221,665.13 : 305,899.82 = 126,177.96 : x - Step 2: Convert to fraction form
221,665.13/305,899.82 = 126,177.96/x - Step 3: Cross multiply
221,665.13x = 305,899.82 × 126,177.96 - Step 4: Simplify right side
221,665.13x = 38,597,814,621.08 - Step 5: Solve for x
x = 38,597,814,621.08/221,665.13 - Step 6: Final answer
x = 174,126.69
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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.