Finding the Fourth Proportional to 128,523.06, 177,361.79 and 71,934.44
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Solution
The fourth proportional to 128,523.06, 177,361.79 and 71,934.44 is: 99,269.50
Step by Step Solution
- Step 1: Write the proportion equation
128,523.06 : 177,361.79 = 71,934.44 : x - Step 2: Convert to fraction form
128,523.06/177,361.79 = 71,934.44/x - Step 3: Cross multiply
128,523.06x = 177,361.79 × 71,934.44 - Step 4: Simplify right side
128,523.06x = 12,758,419,794.57 - Step 5: Solve for x
x = 12,758,419,794.57/128,523.06 - Step 6: Final answer
x = 99,269.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.