Finding the Fourth Proportional to 213,993.09, 295,312.43 and 129,093.75
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Solution
The fourth proportional to 213,993.09, 295,312.43 and 129,093.75 is: 178,150.56
Step by Step Solution
- Step 1: Write the proportion equation
213,993.09 : 295,312.43 = 129,093.75 : x - Step 2: Convert to fraction form
213,993.09/295,312.43 = 129,093.75/x - Step 3: Cross multiply
213,993.09x = 295,312.43 × 129,093.75 - Step 4: Simplify right side
213,993.09x = 38,122,989,333.05 - Step 5: Solve for x
x = 38,122,989,333.05/213,993.09 - Step 6: Final answer
x = 178,150.56
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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.