Finding the Fourth Proportional to 209,154.13, 313,780.40 and 68,912.75
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Solution
The fourth proportional to 209,154.13, 313,780.40 and 68,912.75 is: 103,385.34
Step by Step Solution
- Step 1: Write the proportion equation
209,154.13 : 313,780.40 = 68,912.75 : x - Step 2: Convert to fraction form
209,154.13/313,780.40 = 68,912.75/x - Step 3: Cross multiply
209,154.13x = 313,780.40 × 68,912.75 - Step 4: Simplify right side
209,154.13x = 21,623,470,260.10 - Step 5: Solve for x
x = 21,623,470,260.10/209,154.13 - Step 6: Final answer
x = 103,385.34
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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.