Finding the Fourth Proportional to 129,829.20, 194,816.70 and 54,936.60
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Solution
The fourth proportional to 129,829.20, 194,816.70 and 54,936.60 is: 82,435.75
Step by Step Solution
- Step 1: Write the proportion equation
129,829.20 : 194,816.70 = 54,936.60 : x - Step 2: Convert to fraction form
129,829.20/194,816.70 = 54,936.60/x - Step 3: Cross multiply
129,829.20x = 194,816.70 × 54,936.60 - Step 4: Simplify right side
129,829.20x = 10,702,567,121.22 - Step 5: Solve for x
x = 10,702,567,121.22/129,829.20 - Step 6: Final answer
x = 82,435.75
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.