Finding the Fourth Proportional to 103,163.05, 154,731.40 and 39,939.92
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Solution
The fourth proportional to 103,163.05, 154,731.40 and 39,939.92 is: 59,904.78
Step by Step Solution
- Step 1: Write the proportion equation
103,163.05 : 154,731.40 = 39,939.92 : x - Step 2: Convert to fraction form
103,163.05/154,731.40 = 39,939.92/x - Step 3: Cross multiply
103,163.05x = 154,731.40 × 39,939.92 - Step 4: Simplify right side
103,163.05x = 6,179,959,444.22 - Step 5: Solve for x
x = 6,179,959,444.22/103,163.05 - Step 6: Final answer
x = 59,904.78
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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.