Finding the Fourth Proportional to 116,821.68, 161,213.76 and 66,520.68
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Solution
The fourth proportional to 116,821.68, 161,213.76 and 66,520.68 is: 91,798.45
Step by Step Solution
- Step 1: Write the proportion equation
116,821.68 : 161,213.76 = 66,520.68 : x - Step 2: Convert to fraction form
116,821.68/161,213.76 = 66,520.68/x - Step 3: Cross multiply
116,821.68x = 161,213.76 × 66,520.68 - Step 4: Simplify right side
116,821.68x = 10,724,048,940.56 - Step 5: Solve for x
x = 10,724,048,940.56/116,821.68 - Step 6: Final answer
x = 91,798.45
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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.