Finding the Fourth Proportional to 129,947.20, 194,920.80 and 94,517.80
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Solution
The fourth proportional to 129,947.20, 194,920.80 and 94,517.80 is: 141,776.70
Step by Step Solution
- Step 1: Write the proportion equation
129,947.20 : 194,920.80 = 94,517.80 : x - Step 2: Convert to fraction form
129,947.20/194,920.80 = 94,517.80/x - Step 3: Cross multiply
129,947.20x = 194,920.80 × 94,517.80 - Step 4: Simplify right side
129,947.20x = 18,423,485,190.24 - Step 5: Solve for x
x = 18,423,485,190.24/129,947.20 - Step 6: Final answer
x = 141,776.70
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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.