Finding the Fourth Proportional to 128,299.88, 192,457.73 and 49,414.19
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Solution
The fourth proportional to 128,299.88, 192,457.73 and 49,414.19 is: 74,124.32
Step by Step Solution
- Step 1: Write the proportion equation
128,299.88 : 192,457.73 = 49,414.19 : x - Step 2: Convert to fraction form
128,299.88/192,457.73 = 49,414.19/x - Step 3: Cross multiply
128,299.88x = 192,457.73 × 49,414.19 - Step 4: Simplify right side
128,299.88x = 9,510,141,998.44 - Step 5: Solve for x
x = 9,510,141,998.44/128,299.88 - Step 6: Final answer
x = 74,124.32
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1.5x scale
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.