Finding the Fourth Proportional to 116,731.20, 161,082.45 and 68,988.99
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Solution
The fourth proportional to 116,731.20, 161,082.45 and 68,988.99 is: 95,200.90
Step by Step Solution
- Step 1: Write the proportion equation
116,731.20 : 161,082.45 = 68,988.99 : x - Step 2: Convert to fraction form
116,731.20/161,082.45 = 68,988.99/x - Step 3: Cross multiply
116,731.20x = 161,082.45 × 68,988.99 - Step 4: Simplify right side
116,731.20x = 11,112,915,532.23 - Step 5: Solve for x
x = 11,112,915,532.23/116,731.20 - Step 6: Final answer
x = 95,200.90
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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.