Finding the Fourth Proportional to 129,529.70, 194,112.30 and 102,921.20
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Solution
The fourth proportional to 129,529.70, 194,112.30 and 102,921.20 is: 154,236.99
Step by Step Solution
- Step 1: Write the proportion equation
129,529.70 : 194,112.30 = 102,921.20 : x - Step 2: Convert to fraction form
129,529.70/194,112.30 = 102,921.20/x - Step 3: Cross multiply
129,529.70x = 194,112.30 × 102,921.20 - Step 4: Simplify right side
129,529.70x = 19,978,270,850.76 - Step 5: Solve for x
x = 19,978,270,850.76/129,529.70 - Step 6: Final answer
x = 154,236.99
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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.