Finding the Fourth Proportional to 221,722.14, 305,976.56 and 121,120.14
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Solution
The fourth proportional to 221,722.14, 305,976.56 and 121,120.14 is: 167,145.80
Step by Step Solution
- Step 1: Write the proportion equation
221,722.14 : 305,976.56 = 121,120.14 : x - Step 2: Convert to fraction form
221,722.14/305,976.56 = 121,120.14/x - Step 3: Cross multiply
221,722.14x = 305,976.56 × 121,120.14 - Step 4: Simplify right side
221,722.14x = 37,059,923,783.92 - Step 5: Solve for x
x = 37,059,923,783.92/221,722.14 - Step 6: Final answer
x = 167,145.80
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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.