Finding the Fourth Proportional to 171,361.18, 236,803.74 and 128,845.90
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Solution
The fourth proportional to 171,361.18, 236,803.74 and 128,845.90 is: 178,051.94
Step by Step Solution
- Step 1: Write the proportion equation
171,361.18 : 236,803.74 = 128,845.90 : x - Step 2: Convert to fraction form
171,361.18/236,803.74 = 128,845.90/x - Step 3: Cross multiply
171,361.18x = 236,803.74 × 128,845.90 - Step 4: Simplify right side
171,361.18x = 30,511,189,819.65 - Step 5: Solve for x
x = 30,511,189,819.65/171,361.18 - Step 6: Final answer
x = 178,051.94
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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.