Finding the Fourth Proportional to 128,512.09, 192,720.25 and 44,248.69
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Solution
The fourth proportional to 128,512.09, 192,720.25 and 44,248.69 is: 66,356.55
Step by Step Solution
- Step 1: Write the proportion equation
128,512.09 : 192,720.25 = 44,248.69 : x - Step 2: Convert to fraction form
128,512.09/192,720.25 = 44,248.69/x - Step 3: Cross multiply
128,512.09x = 192,720.25 × 44,248.69 - Step 4: Simplify right side
128,512.09x = 8,527,618,598.97 - Step 5: Solve for x
x = 8,527,618,598.97/128,512.09 - Step 6: Final answer
x = 66,356.55
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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.