Finding the Fourth Proportional to 128,529.48, 192,458.88 and 103,432.44
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Solution
The fourth proportional to 128,529.48, 192,458.88 and 103,432.44 is: 154,878.80
Step by Step Solution
- Step 1: Write the proportion equation
128,529.48 : 192,458.88 = 103,432.44 : x - Step 2: Convert to fraction form
128,529.48/192,458.88 = 103,432.44/x - Step 3: Cross multiply
128,529.48x = 192,458.88 × 103,432.44 - Step 4: Simplify right side
128,529.48x = 19,906,491,558.07 - Step 5: Solve for x
x = 19,906,491,558.07/128,529.48 - Step 6: Final answer
x = 154,878.80
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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.