Finding the Fourth Proportional to 128,368.12, 192,511.20 and 44,107.96
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Solution
The fourth proportional to 128,368.12, 192,511.20 and 44,107.96 is: 66,147.86
Step by Step Solution
- Step 1: Write the proportion equation
128,368.12 : 192,511.20 = 44,107.96 : x - Step 2: Convert to fraction form
128,368.12/192,511.20 = 44,107.96/x - Step 3: Cross multiply
128,368.12x = 192,511.20 × 44,107.96 - Step 4: Simplify right side
128,368.12x = 8,491,276,309.15 - Step 5: Solve for x
x = 8,491,276,309.15/128,368.12 - Step 6: Final answer
x = 66,147.86
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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.