Finding the Fourth Proportional to 128,201.68, 192,302.65 and 33,431.79
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Solution
The fourth proportional to 128,201.68, 192,302.65 and 33,431.79 is: 50,147.72
Step by Step Solution
- Step 1: Write the proportion equation
128,201.68 : 192,302.65 = 33,431.79 : x - Step 2: Convert to fraction form
128,201.68/192,302.65 = 33,431.79/x - Step 3: Cross multiply
128,201.68x = 192,302.65 × 33,431.79 - Step 4: Simplify right side
128,201.68x = 6,429,021,811.24 - Step 5: Solve for x
x = 6,429,021,811.24/128,201.68 - Step 6: Final answer
x = 50,147.72
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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.