Finding the Fourth Proportional to 129,868.80, 194,803.20 and 107,707.20
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Solution
The fourth proportional to 129,868.80, 194,803.20 and 107,707.20 is: 161,560.80
Step by Step Solution
- Step 1: Write the proportion equation
129,868.80 : 194,803.20 = 107,707.20 : x - Step 2: Convert to fraction form
129,868.80/194,803.20 = 107,707.20/x - Step 3: Cross multiply
129,868.80x = 194,803.20 × 107,707.20 - Step 4: Simplify right side
129,868.80x = 20,981,707,223.04 - Step 5: Solve for x
x = 20,981,707,223.04/129,868.80 - Step 6: Final answer
x = 161,560.80
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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.