Finding the Fourth Proportional to 122,620.56, 169,220.36 and 68,915.92
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Solution
The fourth proportional to 122,620.56, 169,220.36 and 68,915.92 is: 95,106.21
Step by Step Solution
- Step 1: Write the proportion equation
122,620.56 : 169,220.36 = 68,915.92 : x - Step 2: Convert to fraction form
122,620.56/169,220.36 = 68,915.92/x - Step 3: Cross multiply
122,620.56x = 169,220.36 × 68,915.92 - Step 4: Simplify right side
122,620.56x = 11,661,976,792.13 - Step 5: Solve for x
x = 11,661,976,792.13/122,620.56 - Step 6: Final answer
x = 95,106.21
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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.