Finding the Fourth Proportional to 129,213.24, 193,622.01 and 86,936.70
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Solution
The fourth proportional to 129,213.24, 193,622.01 and 86,936.70 is: 130,271.94
Step by Step Solution
- Step 1: Write the proportion equation
129,213.24 : 193,622.01 = 86,936.70 : x - Step 2: Convert to fraction form
129,213.24/193,622.01 = 86,936.70/x - Step 3: Cross multiply
129,213.24x = 193,622.01 × 86,936.70 - Step 4: Simplify right side
129,213.24x = 16,832,858,996.84 - Step 5: Solve for x
x = 16,832,858,996.84/129,213.24 - Step 6: Final answer
x = 130,271.94
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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.