Finding the Fourth Proportional to 126,113.05, 189,120.36 and 55,057.42
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Solution
The fourth proportional to 126,113.05, 189,120.36 and 55,057.42 is: 82,564.65
Step by Step Solution
- Step 1: Write the proportion equation
126,113.05 : 189,120.36 = 55,057.42 : x - Step 2: Convert to fraction form
126,113.05/189,120.36 = 55,057.42/x - Step 3: Cross multiply
126,113.05x = 189,120.36 × 55,057.42 - Step 4: Simplify right side
126,113.05x = 10,412,479,533.94 - Step 5: Solve for x
x = 10,412,479,533.94/126,113.05 - Step 6: Final answer
x = 82,564.65
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1.5x scale
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.