Finding the Fourth Proportional to 231,105.36, 318,913.74 and 129,110.58
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Solution
The fourth proportional to 231,105.36, 318,913.74 and 129,110.58 is: 178,166.09
Step by Step Solution
- Step 1: Write the proportion equation
231,105.36 : 318,913.74 = 129,110.58 : x - Step 2: Convert to fraction form
231,105.36/318,913.74 = 129,110.58/x - Step 3: Cross multiply
231,105.36x = 318,913.74 × 129,110.58 - Step 4: Simplify right side
231,105.36x = 41,175,137,941.37 - Step 5: Solve for x
x = 41,175,137,941.37/231,105.36 - Step 6: Final answer
x = 178,166.09
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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.