Finding the Fourth Proportional to 115,739.64, 173,608.21 and 87,831.09
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Solution
The fourth proportional to 115,739.64, 173,608.21 and 87,831.09 is: 131,745.69
Step by Step Solution
- Step 1: Write the proportion equation
115,739.64 : 173,608.21 = 87,831.09 : x - Step 2: Convert to fraction form
115,739.64/173,608.21 = 87,831.09/x - Step 3: Cross multiply
115,739.64x = 173,608.21 × 87,831.09 - Step 4: Simplify right side
115,739.64x = 15,248,198,317.25 - Step 5: Solve for x
x = 15,248,198,317.25/115,739.64 - Step 6: Final answer
x = 131,745.69
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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.