Finding the Fourth Proportional to 140,515.43, 193,915.94 and 76,853.23
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Solution
The fourth proportional to 140,515.43, 193,915.94 and 76,853.23 is: 106,059.99
Step by Step Solution
- Step 1: Write the proportion equation
140,515.43 : 193,915.94 = 76,853.23 : x - Step 2: Convert to fraction form
140,515.43/193,915.94 = 76,853.23/x - Step 3: Cross multiply
140,515.43x = 193,915.94 × 76,853.23 - Step 4: Simplify right side
140,515.43x = 14,903,066,121.89 - Step 5: Solve for x
x = 14,903,066,121.89/140,515.43 - Step 6: Final answer
x = 106,059.99
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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.