Finding the Fourth Proportional to 121,433.41, 181,990.19 and 68,124.38
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Solution
The fourth proportional to 121,433.41, 181,990.19 and 68,124.38 is: 102,096.84
Step by Step Solution
- Step 1: Write the proportion equation
121,433.41 : 181,990.19 = 68,124.38 : x - Step 2: Convert to fraction form
121,433.41/181,990.19 = 68,124.38/x - Step 3: Cross multiply
121,433.41x = 181,990.19 × 68,124.38 - Step 4: Simplify right side
121,433.41x = 12,397,968,120.19 - Step 5: Solve for x
x = 12,397,968,120.19/121,433.41 - Step 6: Final answer
x = 102,096.84
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.