Finding the Fourth Proportional to 122,286.44, 168,828.90 and 79,915.88
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Solution
The fourth proportional to 122,286.44, 168,828.90 and 79,915.88 is: 110,332.02
Step by Step Solution
- Step 1: Write the proportion equation
122,286.44 : 168,828.90 = 79,915.88 : x - Step 2: Convert to fraction form
122,286.44/168,828.90 = 79,915.88/x - Step 3: Cross multiply
122,286.44x = 168,828.90 × 79,915.88 - Step 4: Simplify right side
122,286.44x = 13,492,110,112.93 - Step 5: Solve for x
x = 13,492,110,112.93/122,286.44 - Step 6: Final answer
x = 110,332.02
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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.