Finding the Fourth Proportional to 128,320.96, 192,433.44 and 44,057.20
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Solution
The fourth proportional to 128,320.96, 192,433.44 and 44,057.20 is: 66,069.32
Step by Step Solution
- Step 1: Write the proportion equation
128,320.96 : 192,433.44 = 44,057.20 : x - Step 2: Convert to fraction form
128,320.96/192,433.44 = 44,057.20/x - Step 3: Cross multiply
128,320.96x = 192,433.44 × 44,057.20 - Step 4: Simplify right side
128,320.96x = 8,478,078,552.77 - Step 5: Solve for x
x = 8,478,078,552.77/128,320.96 - Step 6: Final answer
x = 66,069.32
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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.