Finding the Fourth Proportional to 128,419.16, 192,579.12 and 44,163.36
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Solution
The fourth proportional to 128,419.16, 192,579.12 and 44,163.36 is: 66,227.98
Step by Step Solution
- Step 1: Write the proportion equation
128,419.16 : 192,579.12 = 44,163.36 : x - Step 2: Convert to fraction form
128,419.16/192,579.12 = 44,163.36/x - Step 3: Cross multiply
128,419.16x = 192,579.12 × 44,163.36 - Step 4: Simplify right side
128,419.16x = 8,504,941,005.04 - Step 5: Solve for x
x = 8,504,941,005.04/128,419.16 - Step 6: Final answer
x = 66,227.98
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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.