Finding the Fourth Proportional to 191,465.75, 287,198.49 and 86,161.70
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Solution
The fourth proportional to 191,465.75, 287,198.49 and 86,161.70 is: 129,242.49
Step by Step Solution
- Step 1: Write the proportion equation
191,465.75 : 287,198.49 = 86,161.70 : x - Step 2: Convert to fraction form
191,465.75/287,198.49 = 86,161.70/x - Step 3: Cross multiply
191,465.75x = 287,198.49 × 86,161.70 - Step 4: Simplify right side
191,465.75x = 24,745,510,135.83 - Step 5: Solve for x
x = 24,745,510,135.83/191,465.75 - Step 6: Final answer
x = 129,242.49
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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.