Finding the Fourth Proportional to 100,361.70, 150,542.55 and 74,117.70
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Solution
The fourth proportional to 100,361.70, 150,542.55 and 74,117.70 is: 111,176.55
Step by Step Solution
- Step 1: Write the proportion equation
100,361.70 : 150,542.55 = 74,117.70 : x - Step 2: Convert to fraction form
100,361.70/150,542.55 = 74,117.70/x - Step 3: Cross multiply
100,361.70x = 150,542.55 × 74,117.70 - Step 4: Simplify right side
100,361.70x = 11,157,867,558.14 - Step 5: Solve for x
x = 11,157,867,558.14/100,361.70 - Step 6: Final answer
x = 111,176.55
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1.5x scale
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.