Finding the Fourth Proportional to 136,804.20, 188,713.94 and 80,204.68
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Solution
The fourth proportional to 136,804.20, 188,713.94 and 80,204.68 is: 110,637.99
Step by Step Solution
- Step 1: Write the proportion equation
136,804.20 : 188,713.94 = 80,204.68 : x - Step 2: Convert to fraction form
136,804.20/188,713.94 = 80,204.68/x - Step 3: Cross multiply
136,804.20x = 188,713.94 × 80,204.68 - Step 4: Simplify right side
136,804.20x = 15,135,741,169.24 - Step 5: Solve for x
x = 15,135,741,169.24/136,804.20 - Step 6: Final answer
x = 110,637.99
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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.