Finding the Fourth Proportional to 128,687.93, 193,057.71 and 44,451.17
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Solution
The fourth proportional to 128,687.93, 193,057.71 and 44,451.17 is: 66,685.67
Step by Step Solution
- Step 1: Write the proportion equation
128,687.93 : 193,057.71 = 44,451.17 : x - Step 2: Convert to fraction form
128,687.93/193,057.71 = 44,451.17/x - Step 3: Cross multiply
128,687.93x = 193,057.71 × 44,451.17 - Step 4: Simplify right side
128,687.93x = 8,581,641,087.02 - Step 5: Solve for x
x = 8,581,641,087.02/128,687.93 - Step 6: Final answer
x = 66,685.67
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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.