Finding the Fourth Proportional to 128,511.28, 192,719.04 and 44,247.88
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Solution
The fourth proportional to 128,511.28, 192,719.04 and 44,247.88 is: 66,355.33
Step by Step Solution
- Step 1: Write the proportion equation
128,511.28 : 192,719.04 = 44,247.88 : x - Step 2: Convert to fraction form
128,511.28/192,719.04 = 44,247.88/x - Step 3: Cross multiply
128,511.28x = 192,719.04 × 44,247.88 - Step 4: Simplify right side
128,511.28x = 8,527,408,307.91 - Step 5: Solve for x
x = 8,527,408,307.91/128,511.28 - Step 6: Final answer
x = 66,355.33
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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.