Finding the Fourth Proportional to 136,611.20, 204,916.80 and 119,115.20
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Solution
The fourth proportional to 136,611.20, 204,916.80 and 119,115.20 is: 178,672.80
Step by Step Solution
- Step 1: Write the proportion equation
136,611.20 : 204,916.80 = 119,115.20 : x - Step 2: Convert to fraction form
136,611.20/204,916.80 = 119,115.20/x - Step 3: Cross multiply
136,611.20x = 204,916.80 × 119,115.20 - Step 4: Simplify right side
136,611.20x = 24,408,705,615.36 - Step 5: Solve for x
x = 24,408,705,615.36/136,611.20 - Step 6: Final answer
x = 178,672.80
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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.