Finding the Fourth Proportional to 149,739.49, 206,640.92 and 81,757.05
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Solution
The fourth proportional to 149,739.49, 206,640.92 and 81,757.05 is: 112,824.96
Step by Step Solution
- Step 1: Write the proportion equation
149,739.49 : 206,640.92 = 81,757.05 : x - Step 2: Convert to fraction form
149,739.49/206,640.92 = 81,757.05/x - Step 3: Cross multiply
149,739.49x = 206,640.92 × 81,757.05 - Step 4: Simplify right side
149,739.49x = 16,894,351,457.98 - Step 5: Solve for x
x = 16,894,351,457.98/149,739.49 - Step 6: Final answer
x = 112,824.96
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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.