Finding the Fourth Proportional to 131,440.80, 197,161.20 and 91,351.20
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Solution
The fourth proportional to 131,440.80, 197,161.20 and 91,351.20 is: 137,026.80
Step by Step Solution
- Step 1: Write the proportion equation
131,440.80 : 197,161.20 = 91,351.20 : x - Step 2: Convert to fraction form
131,440.80/197,161.20 = 91,351.20/x - Step 3: Cross multiply
131,440.80x = 197,161.20 × 91,351.20 - Step 4: Simplify right side
131,440.80x = 18,010,912,213.44 - Step 5: Solve for x
x = 18,010,912,213.44/131,440.80 - Step 6: Final answer
x = 137,026.80
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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.