Finding the Fourth Proportional to 121,230.91, 167,292.07 and 66,772.48
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Solution
The fourth proportional to 121,230.91, 167,292.07 and 66,772.48 is: 92,142.39
Step by Step Solution
- Step 1: Write the proportion equation
121,230.91 : 167,292.07 = 66,772.48 : x - Step 2: Convert to fraction form
121,230.91/167,292.07 = 66,772.48/x - Step 3: Cross multiply
121,230.91x = 167,292.07 × 66,772.48 - Step 4: Simplify right side
121,230.91x = 11,170,505,227.91 - Step 5: Solve for x
x = 11,170,505,227.91/121,230.91 - Step 6: Final answer
x = 92,142.39
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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.