Finding the Fourth Proportional to 136,699.80, 205,049.70 and 122,921.70
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Solution
The fourth proportional to 136,699.80, 205,049.70 and 122,921.70 is: 184,382.55
Step by Step Solution
- Step 1: Write the proportion equation
136,699.80 : 205,049.70 = 122,921.70 : x - Step 2: Convert to fraction form
136,699.80/205,049.70 = 122,921.70/x - Step 3: Cross multiply
136,699.80x = 205,049.70 × 122,921.70 - Step 4: Simplify right side
136,699.80x = 25,205,057,708.49 - Step 5: Solve for x
x = 25,205,057,708.49/136,699.80 - Step 6: Final answer
x = 184,382.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.