Finding the Fourth Proportional to 129,896.20, 194,844.30 and 87,905.80
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Solution
The fourth proportional to 129,896.20, 194,844.30 and 87,905.80 is: 131,858.70
Step by Step Solution
- Step 1: Write the proportion equation
129,896.20 : 194,844.30 = 87,905.80 : x - Step 2: Convert to fraction form
129,896.20/194,844.30 = 87,905.80/x - Step 3: Cross multiply
129,896.20x = 194,844.30 × 87,905.80 - Step 4: Simplify right side
129,896.20x = 17,127,944,066.94 - Step 5: Solve for x
x = 17,127,944,066.94/129,896.20 - Step 6: Final answer
x = 131,858.70
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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.