Finding the Fourth Proportional to 135,079.97, 202,556.34 and 78,936.31
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Solution
The fourth proportional to 135,079.97, 202,556.34 and 78,936.31 is: 118,367.29
Step by Step Solution
- Step 1: Write the proportion equation
135,079.97 : 202,556.34 = 78,936.31 : x - Step 2: Convert to fraction form
135,079.97/202,556.34 = 78,936.31/x - Step 3: Cross multiply
135,079.97x = 202,556.34 × 78,936.31 - Step 4: Simplify right side
135,079.97x = 15,989,050,046.71 - Step 5: Solve for x
x = 15,989,050,046.71/135,079.97 - Step 6: Final answer
x = 118,367.29
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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.