Finding the Fourth Proportional to 129,825.12, 194,737.68 and 31,329.12
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Solution
The fourth proportional to 129,825.12, 194,737.68 and 31,329.12 is: 46,993.68
Step by Step Solution
- Step 1: Write the proportion equation
129,825.12 : 194,737.68 = 31,329.12 : x - Step 2: Convert to fraction form
129,825.12/194,737.68 = 31,329.12/x - Step 3: Cross multiply
129,825.12x = 194,737.68 × 31,329.12 - Step 4: Simplify right side
129,825.12x = 6,100,960,145.24 - Step 5: Solve for x
x = 6,100,960,145.24/129,825.12 - Step 6: Final answer
x = 46,993.68
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1.5x scale
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.