Finding the Fourth Proportional to 123,343.72, 170,214.84 and 66,755.08
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Solution
The fourth proportional to 123,343.72, 170,214.84 and 66,755.08 is: 92,122.28
Step by Step Solution
- Step 1: Write the proportion equation
123,343.72 : 170,214.84 = 66,755.08 : x - Step 2: Convert to fraction form
123,343.72/170,214.84 = 66,755.08/x - Step 3: Cross multiply
123,343.72x = 170,214.84 × 66,755.08 - Step 4: Simplify right side
123,343.72x = 11,362,705,520.04 - Step 5: Solve for x
x = 11,362,705,520.04/123,343.72 - Step 6: Final answer
x = 92,122.28
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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.