Finding the Fourth Proportional to 104,161.88, 143,793.12 and 65,939.96
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Solution
The fourth proportional to 104,161.88, 143,793.12 and 65,939.96 is: 91,028.62
Step by Step Solution
- Step 1: Write the proportion equation
104,161.88 : 143,793.12 = 65,939.96 : x - Step 2: Convert to fraction form
104,161.88/143,793.12 = 65,939.96/x - Step 3: Cross multiply
104,161.88x = 143,793.12 × 65,939.96 - Step 4: Simplify right side
104,161.88x = 9,481,712,581.08 - Step 5: Solve for x
x = 9,481,712,581.08/104,161.88 - Step 6: Final answer
x = 91,028.62
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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.