Finding the Fourth Proportional to 157,754.76, 217,704.60 and 86,137.62
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Solution
The fourth proportional to 157,754.76, 217,704.60 and 86,137.62 is: 118,871.57
Step by Step Solution
- Step 1: Write the proportion equation
157,754.76 : 217,704.60 = 86,137.62 : x - Step 2: Convert to fraction form
157,754.76/217,704.60 = 86,137.62/x - Step 3: Cross multiply
157,754.76x = 217,704.60 × 86,137.62 - Step 4: Simplify right side
157,754.76x = 18,752,556,107.05 - Step 5: Solve for x
x = 18,752,556,107.05/157,754.76 - Step 6: Final answer
x = 118,871.57
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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.