Finding the Fourth Proportional to 129,874.80, 194,812.20 and 70,825.80
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Solution
The fourth proportional to 129,874.80, 194,812.20 and 70,825.80 is: 106,238.70
Step by Step Solution
- Step 1: Write the proportion equation
129,874.80 : 194,812.20 = 70,825.80 : x - Step 2: Convert to fraction form
129,874.80/194,812.20 = 70,825.80/x - Step 3: Cross multiply
129,874.80x = 194,812.20 × 70,825.80 - Step 4: Simplify right side
129,874.80x = 13,797,729,914.76 - Step 5: Solve for x
x = 13,797,729,914.76/129,874.80 - Step 6: Final answer
x = 106,238.70
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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.