Finding the Fourth Proportional to 136,917.28, 188,932.26 and 76,486.62
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Solution
The fourth proportional to 136,917.28, 188,932.26 and 76,486.62 is: 105,543.95
Step by Step Solution
- Step 1: Write the proportion equation
136,917.28 : 188,932.26 = 76,486.62 : x - Step 2: Convert to fraction form
136,917.28/188,932.26 = 76,486.62/x - Step 3: Cross multiply
136,917.28x = 188,932.26 × 76,486.62 - Step 4: Simplify right side
136,917.28x = 14,450,789,976.36 - Step 5: Solve for x
x = 14,450,789,976.36/136,917.28 - Step 6: Final answer
x = 105,543.95
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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.