Finding the Fourth Proportional to 128,571.14, 192,869.40 and 44,320.21
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Solution
The fourth proportional to 128,571.14, 192,869.40 and 44,320.21 is: 66,484.69
Step by Step Solution
- Step 1: Write the proportion equation
128,571.14 : 192,869.40 = 44,320.21 : x - Step 2: Convert to fraction form
128,571.14/192,869.40 = 44,320.21/x - Step 3: Cross multiply
128,571.14x = 192,869.40 × 44,320.21 - Step 4: Simplify right side
128,571.14x = 8,548,012,088.97 - Step 5: Solve for x
x = 8,548,012,088.97/128,571.14 - Step 6: Final answer
x = 66,484.69
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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.