Finding the Fourth Proportional to 100,452.34, 150,706.32 and 81,685.99
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Solution
The fourth proportional to 100,452.34, 150,706.32 and 81,685.99 is: 122,551.60
Step by Step Solution
- Step 1: Write the proportion equation
100,452.34 : 150,706.32 = 81,685.99 : x - Step 2: Convert to fraction form
100,452.34/150,706.32 = 81,685.99/x - Step 3: Cross multiply
100,452.34x = 150,706.32 × 81,685.99 - Step 4: Simplify right side
100,452.34x = 12,310,594,948.46 - Step 5: Solve for x
x = 12,310,594,948.46/100,452.34 - Step 6: Final answer
x = 122,551.60
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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.