Finding the Fourth Proportional to 136,672.92, 188,617.01 and 76,243.68
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Solution
The fourth proportional to 136,672.92, 188,617.01 and 76,243.68 is: 105,220.95
Step by Step Solution
- Step 1: Write the proportion equation
136,672.92 : 188,617.01 = 76,243.68 : x - Step 2: Convert to fraction form
136,672.92/188,617.01 = 76,243.68/x - Step 3: Cross multiply
136,672.92x = 188,617.01 × 76,243.68 - Step 4: Simplify right side
136,672.92x = 14,380,854,571.78 - Step 5: Solve for x
x = 14,380,854,571.78/136,672.92 - Step 6: Final answer
x = 105,220.95
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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.