Finding the Fourth Proportional to 129,857.13, 194,814.86 and 41,103.81
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Solution
The fourth proportional to 129,857.13, 194,814.86 and 41,103.81 is: 61,664.95
Step by Step Solution
- Step 1: Write the proportion equation
129,857.13 : 194,814.86 = 41,103.81 : x - Step 2: Convert to fraction form
129,857.13/194,814.86 = 41,103.81/x - Step 3: Cross multiply
129,857.13x = 194,814.86 × 41,103.81 - Step 4: Simplify right side
129,857.13x = 8,007,632,785.10 - Step 5: Solve for x
x = 8,007,632,785.10/129,857.13 - Step 6: Final answer
x = 61,664.95
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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.