Finding the Fourth Proportional to 125,709.40, 173,478.97 and 69,120.77
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Solution
The fourth proportional to 125,709.40, 173,478.97 and 69,120.77 is: 95,386.66
Step by Step Solution
- Step 1: Write the proportion equation
125,709.40 : 173,478.97 = 69,120.77 : x - Step 2: Convert to fraction form
125,709.40/173,478.97 = 69,120.77/x - Step 3: Cross multiply
125,709.40x = 173,478.97 × 69,120.77 - Step 4: Simplify right side
125,709.40x = 11,990,999,639.60 - Step 5: Solve for x
x = 11,990,999,639.60/125,709.40 - Step 6: Final answer
x = 95,386.66
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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.