Finding the Fourth Proportional to 252,108.75, 347,917.37 and 138,938.79
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Solution
The fourth proportional to 252,108.75, 347,917.37 and 138,938.79 is: 191,739.55
Step by Step Solution
- Step 1: Write the proportion equation
252,108.75 : 347,917.37 = 138,938.79 : x - Step 2: Convert to fraction form
252,108.75/347,917.37 = 138,938.79/x - Step 3: Cross multiply
252,108.75x = 347,917.37 × 138,938.79 - Step 4: Simplify right side
252,108.75x = 48,339,217,713.09 - Step 5: Solve for x
x = 48,339,217,713.09/252,108.75 - Step 6: Final answer
x = 191,739.55
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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.