Finding the Fourth Proportional to 231,099.97, 318,920.07 and 135,608.26
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Solution
The fourth proportional to 231,099.97, 318,920.07 and 135,608.26 is: 187,140.64
Step by Step Solution
- Step 1: Write the proportion equation
231,099.97 : 318,920.07 = 135,608.26 : x - Step 2: Convert to fraction form
231,099.97/318,920.07 = 135,608.26/x - Step 3: Cross multiply
231,099.97x = 318,920.07 × 135,608.26 - Step 4: Simplify right side
231,099.97x = 43,248,195,771.78 - Step 5: Solve for x
x = 43,248,195,771.78/231,099.97 - Step 6: Final answer
x = 187,140.64
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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.