Finding the Fourth Proportional to 209,157.13, 313,784.90 and 68,915.75
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Solution
The fourth proportional to 209,157.13, 313,784.90 and 68,915.75 is: 103,389.84
Step by Step Solution
- Step 1: Write the proportion equation
209,157.13 : 313,784.90 = 68,915.75 : x - Step 2: Convert to fraction form
209,157.13/313,784.90 = 68,915.75/x - Step 3: Cross multiply
209,157.13x = 313,784.90 × 68,915.75 - Step 4: Simplify right side
209,157.13x = 21,624,721,722.18 - Step 5: Solve for x
x = 21,624,721,722.18/209,157.13 - Step 6: Final answer
x = 103,389.84
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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.