Finding the Fourth Proportional to 201,989.80, 278,922.18 and 126,668.20
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Solution
The fourth proportional to 201,989.80, 278,922.18 and 126,668.20 is: 174,912.65
Step by Step Solution
- Step 1: Write the proportion equation
201,989.80 : 278,922.18 = 126,668.20 : x - Step 2: Convert to fraction form
201,989.80/278,922.18 = 126,668.20/x - Step 3: Cross multiply
201,989.80x = 278,922.18 × 126,668.20 - Step 4: Simplify right side
201,989.80x = 35,330,570,480.68 - Step 5: Solve for x
x = 35,330,570,480.68/201,989.80 - Step 6: Final answer
x = 174,912.65
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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.