Finding the Fourth Proportional to 136,905.40, 205,365.44 and 43,418.44
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Solution
The fourth proportional to 136,905.40, 205,365.44 and 43,418.44 is: 65,129.99
Step by Step Solution
- Step 1: Write the proportion equation
136,905.40 : 205,365.44 = 43,418.44 : x - Step 2: Convert to fraction form
136,905.40/205,365.44 = 43,418.44/x - Step 3: Cross multiply
136,905.40x = 205,365.44 × 43,418.44 - Step 4: Simplify right side
136,905.40x = 8,916,647,034.71 - Step 5: Solve for x
x = 8,916,647,034.71/136,905.40 - Step 6: Final answer
x = 65,129.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.