Finding the Fourth Proportional to 125,680.12, 173,438.60 and 71,982.96
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Solution
The fourth proportional to 125,680.12, 173,438.60 and 71,982.96 is: 99,336.50
Step by Step Solution
- Step 1: Write the proportion equation
125,680.12 : 173,438.60 = 71,982.96 : x - Step 2: Convert to fraction form
125,680.12/173,438.60 = 71,982.96/x - Step 3: Cross multiply
125,680.12x = 173,438.60 × 71,982.96 - Step 4: Simplify right side
125,680.12x = 12,484,623,806.26 - Step 5: Solve for x
x = 12,484,623,806.26/125,680.12 - Step 6: Final answer
x = 99,336.50
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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.