Finding the Fourth Proportional to 129,645.20, 194,453.40 and 106,230.80
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Solution
The fourth proportional to 129,645.20, 194,453.40 and 106,230.80 is: 159,334.40
Step by Step Solution
- Step 1: Write the proportion equation
129,645.20 : 194,453.40 = 106,230.80 : x - Step 2: Convert to fraction form
129,645.20/194,453.40 = 106,230.80/x - Step 3: Cross multiply
129,645.20x = 194,453.40 × 106,230.80 - Step 4: Simplify right side
129,645.20x = 20,656,940,244.72 - Step 5: Solve for x
x = 20,656,940,244.72/129,645.20 - Step 6: Final answer
x = 159,334.40
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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.