Finding the Fourth Proportional to 126,351.99, 189,573.11 and 54,274.62
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Solution
The fourth proportional to 126,351.99, 189,573.11 and 54,274.62 is: 81,431.31
Step by Step Solution
- Step 1: Write the proportion equation
126,351.99 : 189,573.11 = 54,274.62 : x - Step 2: Convert to fraction form
126,351.99/189,573.11 = 54,274.62/x - Step 3: Cross multiply
126,351.99x = 189,573.11 × 54,274.62 - Step 4: Simplify right side
126,351.99x = 10,289,008,350.76 - Step 5: Solve for x
x = 10,289,008,350.76/126,351.99 - Step 6: Final answer
x = 81,431.31
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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.