Finding the Fourth Proportional to 122,704.92, 169,321.12 and 71,729.60
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Solution
The fourth proportional to 122,704.92, 169,321.12 and 71,729.60 is: 98,980.03
Step by Step Solution
- Step 1: Write the proportion equation
122,704.92 : 169,321.12 = 71,729.60 : x - Step 2: Convert to fraction form
122,704.92/169,321.12 = 71,729.60/x - Step 3: Cross multiply
122,704.92x = 169,321.12 × 71,729.60 - Step 4: Simplify right side
122,704.92x = 12,145,336,209.15 - Step 5: Solve for x
x = 12,145,336,209.15/122,704.92 - Step 6: Final answer
x = 98,980.03
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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.