Finding the Fourth Proportional to 129,936.40, 194,904.60 and 122,063.20
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Solution
The fourth proportional to 129,936.40, 194,904.60 and 122,063.20 is: 183,094.80
Step by Step Solution
- Step 1: Write the proportion equation
129,936.40 : 194,904.60 = 122,063.20 : x - Step 2: Convert to fraction form
129,936.40/194,904.60 = 122,063.20/x - Step 3: Cross multiply
129,936.40x = 194,904.60 × 122,063.20 - Step 4: Simplify right side
129,936.40x = 23,790,679,170.72 - Step 5: Solve for x
x = 23,790,679,170.72/129,936.40 - Step 6: Final answer
x = 183,094.80
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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.