Finding the Fourth Proportional to 211,745.08, 292,212.32 and 121,115.80
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Solution
The fourth proportional to 211,745.08, 292,212.32 and 121,115.80 is: 167,142.15
Step by Step Solution
- Step 1: Write the proportion equation
211,745.08 : 292,212.32 = 121,115.80 : x - Step 2: Convert to fraction form
211,745.08/292,212.32 = 121,115.80/x - Step 3: Cross multiply
211,745.08x = 292,212.32 × 121,115.80 - Step 4: Simplify right side
211,745.08x = 35,391,528,906.66 - Step 5: Solve for x
x = 35,391,528,906.66/211,745.08 - Step 6: Final answer
x = 167,142.15
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.