Finding the Fourth Proportional to 138,183.22, 207,274.86 and 38,343.44
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Solution
The fourth proportional to 138,183.22, 207,274.86 and 38,343.44 is: 57,515.17
Step by Step Solution
- Step 1: Write the proportion equation
138,183.22 : 207,274.86 = 38,343.44 : x - Step 2: Convert to fraction form
138,183.22/207,274.86 = 38,343.44/x - Step 3: Cross multiply
138,183.22x = 207,274.86 × 38,343.44 - Step 4: Simplify right side
138,183.22x = 7,947,631,157.92 - Step 5: Solve for x
x = 7,947,631,157.92/138,183.22 - Step 6: Final answer
x = 57,515.17
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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.