Finding the Fourth Proportional to 128,203.68, 192,374.37 and 53,375.49
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Solution
The fourth proportional to 128,203.68, 192,374.37 and 53,375.49 is: 80,091.90
Step by Step Solution
- Step 1: Write the proportion equation
128,203.68 : 192,374.37 = 53,375.49 : x - Step 2: Convert to fraction form
128,203.68/192,374.37 = 53,375.49/x - Step 3: Cross multiply
128,203.68x = 192,374.37 × 53,375.49 - Step 4: Simplify right side
128,203.68x = 10,268,076,262.19 - Step 5: Solve for x
x = 10,268,076,262.19/128,203.68 - Step 6: Final answer
x = 80,091.90
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1.5x scale
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.