Finding the Fourth Proportional to 128,515.44, 192,725.12 and 44,251.76
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Solution
The fourth proportional to 128,515.44, 192,725.12 and 44,251.76 is: 66,361.10
Step by Step Solution
- Step 1: Write the proportion equation
128,515.44 : 192,725.12 = 44,251.76 : x - Step 2: Convert to fraction form
128,515.44/192,725.12 = 44,251.76/x - Step 3: Cross multiply
128,515.44x = 192,725.12 × 44,251.76 - Step 4: Simplify right side
128,515.44x = 8,528,425,756.21 - Step 5: Solve for x
x = 8,528,425,756.21/128,515.44 - Step 6: Final answer
x = 66,361.10
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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.