Finding the Fourth Proportional to 209,157.64, 313,785.66 and 68,916.26
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Solution
The fourth proportional to 209,157.64, 313,785.66 and 68,916.26 is: 103,390.60
Step by Step Solution
- Step 1: Write the proportion equation
209,157.64 : 313,785.66 = 68,916.26 : x - Step 2: Convert to fraction form
209,157.64/313,785.66 = 68,916.26/x - Step 3: Cross multiply
209,157.64x = 313,785.66 × 68,916.26 - Step 4: Simplify right side
209,157.64x = 21,624,934,128.83 - Step 5: Solve for x
x = 21,624,934,128.83/209,157.64 - Step 6: Final answer
x = 103,390.60
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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.