Finding the Fourth Proportional to 129,899.16, 194,950.67 and 66,716.73
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Solution
The fourth proportional to 129,899.16, 194,950.67 and 66,716.73 is: 100,127.44
Step by Step Solution
- Step 1: Write the proportion equation
129,899.16 : 194,950.67 = 66,716.73 : x - Step 2: Convert to fraction form
129,899.16/194,950.67 = 66,716.73/x - Step 3: Cross multiply
129,899.16x = 194,950.67 × 66,716.73 - Step 4: Simplify right side
129,899.16x = 13,006,470,880.13 - Step 5: Solve for x
x = 13,006,470,880.13/129,899.16 - Step 6: Final answer
x = 100,127.44
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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.