Finding the Fourth Proportional to 129,907.40, 194,861.10 and 122,649.80
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Solution
The fourth proportional to 129,907.40, 194,861.10 and 122,649.80 is: 183,974.70
Step by Step Solution
- Step 1: Write the proportion equation
129,907.40 : 194,861.10 = 122,649.80 : x - Step 2: Convert to fraction form
129,907.40/194,861.10 = 122,649.80/x - Step 3: Cross multiply
129,907.40x = 194,861.10 × 122,649.80 - Step 4: Simplify right side
129,907.40x = 23,899,674,942.78 - Step 5: Solve for x
x = 23,899,674,942.78/129,907.40 - Step 6: Final answer
x = 183,974.70
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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.