Finding the Fourth Proportional to 128,276.44, 192,432.75 and 39,537.16
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Solution
The fourth proportional to 128,276.44, 192,432.75 and 39,537.16 is: 59,311.32
Step by Step Solution
- Step 1: Write the proportion equation
128,276.44 : 192,432.75 = 39,537.16 : x - Step 2: Convert to fraction form
128,276.44/192,432.75 = 39,537.16/x - Step 3: Cross multiply
128,276.44x = 192,432.75 × 39,537.16 - Step 4: Simplify right side
128,276.44x = 7,608,244,425.99 - Step 5: Solve for x
x = 7,608,244,425.99/128,276.44 - Step 6: Final answer
x = 59,311.32
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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.