Finding the Fourth Proportional to 116,728.76, 161,079.09 and 68,986.55
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Solution
The fourth proportional to 116,728.76, 161,079.09 and 68,986.55 is: 95,197.54
Step by Step Solution
- Step 1: Write the proportion equation
116,728.76 : 161,079.09 = 68,986.55 : x - Step 2: Convert to fraction form
116,728.76/161,079.09 = 68,986.55/x - Step 3: Cross multiply
116,728.76x = 161,079.09 × 68,986.55 - Step 4: Simplify right side
116,728.76x = 11,112,290,840.24 - Step 5: Solve for x
x = 11,112,290,840.24/116,728.76 - Step 6: Final answer
x = 95,197.54
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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.