Finding the Fourth Proportional to 143,286.62, 197,734.11 and 79,623.08
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Solution
The fourth proportional to 143,286.62, 197,734.11 and 79,623.08 is: 109,879.06
Step by Step Solution
- Step 1: Write the proportion equation
143,286.62 : 197,734.11 = 79,623.08 : x - Step 2: Convert to fraction form
143,286.62/197,734.11 = 79,623.08/x - Step 3: Cross multiply
143,286.62x = 197,734.11 × 79,623.08 - Step 4: Simplify right side
143,286.62x = 15,744,198,859.26 - Step 5: Solve for x
x = 15,744,198,859.26/143,286.62 - Step 6: Final answer
x = 109,879.06
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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.