Finding the Fourth Proportional to 129,556.40, 194,626.20 and 126,057.20
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Solution
The fourth proportional to 129,556.40, 194,626.20 and 126,057.20 is: 189,369.52
Step by Step Solution
- Step 1: Write the proportion equation
129,556.40 : 194,626.20 = 126,057.20 : x - Step 2: Convert to fraction form
129,556.40/194,626.20 = 126,057.20/x - Step 3: Cross multiply
129,556.40x = 194,626.20 × 126,057.20 - Step 4: Simplify right side
129,556.40x = 24,534,033,818.64 - Step 5: Solve for x
x = 24,534,033,818.64/129,556.40 - Step 6: Final answer
x = 189,369.52
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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.