Finding the Fourth Proportional to 145,906.75, 201,351.36 and 78,838.75
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Solution
The fourth proportional to 145,906.75, 201,351.36 and 78,838.75 is: 108,797.50
Step by Step Solution
- Step 1: Write the proportion equation
145,906.75 : 201,351.36 = 78,838.75 : x - Step 2: Convert to fraction form
145,906.75/201,351.36 = 78,838.75/x - Step 3: Cross multiply
145,906.75x = 201,351.36 × 78,838.75 - Step 4: Simplify right side
145,906.75x = 15,874,289,533.20 - Step 5: Solve for x
x = 15,874,289,533.20/145,906.75 - Step 6: Final answer
x = 108,797.50
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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.