Finding the Fourth Proportional to 74,183.12, 111,275.16 and 18,779.12
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Solution
The fourth proportional to 74,183.12, 111,275.16 and 18,779.12 is: 28,168.80
Step by Step Solution
- Step 1: Write the proportion equation
74,183.12 : 111,275.16 = 18,779.12 : x - Step 2: Convert to fraction form
74,183.12/111,275.16 = 18,779.12/x - Step 3: Cross multiply
74,183.12x = 111,275.16 × 18,779.12 - Step 4: Simplify right side
74,183.12x = 2,089,649,582.66 - Step 5: Solve for x
x = 2,089,649,582.66/74,183.12 - Step 6: Final answer
x = 28,168.80
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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.