Finding the Fourth Proportional to 121,327.20, 181,990.80 and 68,183.10
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Solution
The fourth proportional to 121,327.20, 181,990.80 and 68,183.10 is: 102,274.65
Step by Step Solution
- Step 1: Write the proportion equation
121,327.20 : 181,990.80 = 68,183.10 : x - Step 2: Convert to fraction form
121,327.20/181,990.80 = 68,183.10/x - Step 3: Cross multiply
121,327.20x = 181,990.80 × 68,183.10 - Step 4: Simplify right side
121,327.20x = 12,408,696,915.48 - Step 5: Solve for x
x = 12,408,696,915.48/121,327.20 - Step 6: Final answer
x = 102,274.65
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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.