Finding the Fourth Proportional to 221,706.14, 305,954.87 and 121,104.14
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Solution
The fourth proportional to 221,706.14, 305,954.87 and 121,104.14 is: 167,123.92
Step by Step Solution
- Step 1: Write the proportion equation
221,706.14 : 305,954.87 = 121,104.14 : x - Step 2: Convert to fraction form
221,706.14/305,954.87 = 121,104.14/x - Step 3: Cross multiply
221,706.14x = 305,954.87 × 121,104.14 - Step 4: Simplify right side
221,706.14x = 37,052,399,274.87 - Step 5: Solve for x
x = 37,052,399,274.87/221,706.14 - Step 6: Final answer
x = 167,123.92
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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.