Finding the Fourth Proportional to 206,361.11, 284,657.68 and 129,758.93
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Solution
The fourth proportional to 206,361.11, 284,657.68 and 129,758.93 is: 178,991.45
Step by Step Solution
- Step 1: Write the proportion equation
206,361.11 : 284,657.68 = 129,758.93 : x - Step 2: Convert to fraction form
206,361.11/284,657.68 = 129,758.93/x - Step 3: Cross multiply
206,361.11x = 284,657.68 × 129,758.93 - Step 4: Simplify right side
206,361.11x = 36,936,874,225.40 - Step 5: Solve for x
x = 36,936,874,225.40/206,361.11 - Step 6: Final answer
x = 178,991.45
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1.5x scale
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.