Finding the Fourth Proportional to 100,163.22, 138,219.99 and 54,832.52
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Solution
The fourth proportional to 100,163.22, 138,219.99 and 54,832.52 is: 75,665.99
Step by Step Solution
- Step 1: Write the proportion equation
100,163.22 : 138,219.99 = 54,832.52 : x - Step 2: Convert to fraction form
100,163.22/138,219.99 = 54,832.52/x - Step 3: Cross multiply
100,163.22x = 138,219.99 × 54,832.52 - Step 4: Simplify right side
100,163.22x = 7,578,949,674.97 - Step 5: Solve for x
x = 7,578,949,674.97/100,163.22 - Step 6: Final answer
x = 75,665.99
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1.5x scale
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.