Finding the Fourth Proportional to 221,703.75, 305,951.18 and 121,101.75
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Solution
The fourth proportional to 221,703.75, 305,951.18 and 121,101.75 is: 167,120.42
Step by Step Solution
- Step 1: Write the proportion equation
221,703.75 : 305,951.18 = 121,101.75 : x - Step 2: Convert to fraction form
221,703.75/305,951.18 = 121,101.75/x - Step 3: Cross multiply
221,703.75x = 305,951.18 × 121,101.75 - Step 4: Simplify right side
221,703.75x = 37,051,222,707.06 - Step 5: Solve for x
x = 37,051,222,707.06/221,703.75 - Step 6: Final answer
x = 167,120.42
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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.