Finding the Fourth Proportional to 129,707.22, 194,619.95 and 66,571.68
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Solution
The fourth proportional to 129,707.22, 194,619.95 and 66,571.68 is: 99,887.85
Step by Step Solution
- Step 1: Write the proportion equation
129,707.22 : 194,619.95 = 66,571.68 : x - Step 2: Convert to fraction form
129,707.22/194,619.95 = 66,571.68/x - Step 3: Cross multiply
129,707.22x = 194,619.95 × 66,571.68 - Step 4: Simplify right side
129,707.22x = 12,956,175,850.29 - Step 5: Solve for x
x = 12,956,175,850.29/129,707.22 - Step 6: Final answer
x = 99,887.85
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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.