Finding the Fourth Proportional to 201,568.38, 278,106.66 and 129,989.49
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Solution
The fourth proportional to 201,568.38, 278,106.66 and 129,989.49 is: 179,348.28
Step by Step Solution
- Step 1: Write the proportion equation
201,568.38 : 278,106.66 = 129,989.49 : x - Step 2: Convert to fraction form
201,568.38/278,106.66 = 129,989.49/x - Step 3: Cross multiply
201,568.38x = 278,106.66 × 129,989.49 - Step 4: Simplify right side
201,568.38x = 36,150,942,899.00 - Step 5: Solve for x
x = 36,150,942,899.00/201,568.38 - Step 6: Final answer
x = 179,348.28
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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.