Finding the Fourth Proportional to 206,108.18, 284,568.34 and 128,702.05
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Solution
The fourth proportional to 206,108.18, 284,568.34 and 128,702.05 is: 177,695.65
Step by Step Solution
- Step 1: Write the proportion equation
206,108.18 : 284,568.34 = 128,702.05 : x - Step 2: Convert to fraction form
206,108.18/284,568.34 = 128,702.05/x - Step 3: Cross multiply
206,108.18x = 284,568.34 × 128,702.05 - Step 4: Simplify right side
206,108.18x = 36,624,527,330.98 - Step 5: Solve for x
x = 36,624,527,330.98/206,108.18 - Step 6: Final answer
x = 177,695.65
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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.