Finding the Fourth Proportional to 129,863.20, 194,794.80 and 106,535.20
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Solution
The fourth proportional to 129,863.20, 194,794.80 and 106,535.20 is: 159,802.80
Step by Step Solution
- Step 1: Write the proportion equation
129,863.20 : 194,794.80 = 106,535.20 : x - Step 2: Convert to fraction form
129,863.20/194,794.80 = 106,535.20/x - Step 3: Cross multiply
129,863.20x = 194,794.80 × 106,535.20 - Step 4: Simplify right side
129,863.20x = 20,752,502,976.96 - Step 5: Solve for x
x = 20,752,502,976.96/129,863.20 - Step 6: Final answer
x = 159,802.80
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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.