Finding the Fourth Proportional to 125,764,638,626.41, 188,580,763,512.18 and 85,981,790,636.35
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Solution
The fourth proportional to 125,764,638,626.41, 188,580,763,512.18 and 85,981,790,636.35 is: 128,927,430,662.87
Step by Step Solution
- Step 1: Write the proportion equation
125,764,638,626.41 : 188,580,763,512.18 = 85,981,790,636.35 : x - Step 2: Convert to fraction form
125,764,638,626.41/188,580,763,512.18 = 85,981,790,636.35/x - Step 3: Cross multiply
125,764,638,626.41x = 188,580,763,512.18 × 85,981,790,636.35 - Step 4: Simplify right side
125,764,638,626.41x = 16,214,511,726,347,291,721,728 - Step 5: Solve for x
x = 16,214,511,726,347,291,721,728/125,764,638,626.41 - Step 6: Final answer
x = 128,927,430,662.87
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.