Finding the Fourth Proportional to 145,936.08, 201,391.92 and 78,868.08
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Solution
The fourth proportional to 145,936.08, 201,391.92 and 78,868.08 is: 108,838.02
Step by Step Solution
- Step 1: Write the proportion equation
145,936.08 : 201,391.92 = 78,868.08 : x - Step 2: Convert to fraction form
145,936.08/201,391.92 = 78,868.08/x - Step 3: Cross multiply
145,936.08x = 201,391.92 × 78,868.08 - Step 4: Simplify right side
145,936.08x = 15,883,394,057.91 - Step 5: Solve for x
x = 15,883,394,057.91/145,936.08 - Step 6: Final answer
x = 108,838.02
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1.5x scale
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.