Finding the Fourth Proportional to 209,108.93, 313,487.07 and 90,691.08
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Solution
The fourth proportional to 209,108.93, 313,487.07 and 90,691.08 is: 135,960.15
Step by Step Solution
- Step 1: Write the proportion equation
209,108.93 : 313,487.07 = 90,691.08 : x - Step 2: Convert to fraction form
209,108.93/313,487.07 = 90,691.08/x - Step 3: Cross multiply
209,108.93x = 313,487.07 × 90,691.08 - Step 4: Simplify right side
209,108.93x = 28,430,481,728.05 - Step 5: Solve for x
x = 28,430,481,728.05/209,108.93 - Step 6: Final answer
x = 135,960.15
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.