Finding the Fourth Proportional to 128,583.53, 192,906.08 and 53,661.99
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Solution
The fourth proportional to 128,583.53, 192,906.08 and 53,661.99 is: 80,505.84
Step by Step Solution
- Step 1: Write the proportion equation
128,583.53 : 192,906.08 = 53,661.99 : x - Step 2: Convert to fraction form
128,583.53/192,906.08 = 53,661.99/x - Step 3: Cross multiply
128,583.53x = 192,906.08 × 53,661.99 - Step 4: Simplify right side
128,583.53x = 10,351,724,993.45 - Step 5: Solve for x
x = 10,351,724,993.45/128,583.53 - Step 6: Final answer
x = 80,505.84
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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.