Finding the Fourth Proportional to 84,163.18, 116,213.43 and 80,357.80
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Solution
The fourth proportional to 84,163.18, 116,213.43 and 80,357.80 is: 110,958.92
Step by Step Solution
- Step 1: Write the proportion equation
84,163.18 : 116,213.43 = 80,357.80 : x - Step 2: Convert to fraction form
84,163.18/116,213.43 = 80,357.80/x - Step 3: Cross multiply
84,163.18x = 116,213.43 × 80,357.80 - Step 4: Simplify right side
84,163.18x = 9,338,655,565.25 - Step 5: Solve for x
x = 9,338,655,565.25/84,163.18 - Step 6: Final answer
x = 110,958.92
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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.