Finding the Fourth Proportional to 159,441.84, 220,039.74 and 87,821.82
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Solution
The fourth proportional to 159,441.84, 220,039.74 and 87,821.82 is: 121,199.62
Step by Step Solution
- Step 1: Write the proportion equation
159,441.84 : 220,039.74 = 87,821.82 : x - Step 2: Convert to fraction form
159,441.84/220,039.74 = 87,821.82/x - Step 3: Cross multiply
159,441.84x = 220,039.74 × 87,821.82 - Step 4: Simplify right side
159,441.84x = 19,324,290,439.13 - Step 5: Solve for x
x = 19,324,290,439.13/159,441.84 - Step 6: Final answer
x = 121,199.62
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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.