Finding the Fourth Proportional to 129,834.75, 194,752.12 and 31,338.75
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Solution
The fourth proportional to 129,834.75, 194,752.12 and 31,338.75 is: 47,008.12
Step by Step Solution
- Step 1: Write the proportion equation
129,834.75 : 194,752.12 = 31,338.75 : x - Step 2: Convert to fraction form
129,834.75/194,752.12 = 31,338.75/x - Step 3: Cross multiply
129,834.75x = 194,752.12 × 31,338.75 - Step 4: Simplify right side
129,834.75x = 6,103,287,026.89 - Step 5: Solve for x
x = 6,103,287,026.89/129,834.75 - Step 6: Final answer
x = 47,008.12
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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.