Finding the Fourth Proportional to 145,911.75, 201,358.26 and 78,843.75
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Solution
The fourth proportional to 145,911.75, 201,358.26 and 78,843.75 is: 108,804.40
Step by Step Solution
- Step 1: Write the proportion equation
145,911.75 : 201,358.26 = 78,843.75 : x - Step 2: Convert to fraction form
145,911.75/201,358.26 = 78,843.75/x - Step 3: Cross multiply
145,911.75x = 201,358.26 × 78,843.75 - Step 4: Simplify right side
145,911.75x = 15,875,840,311.88 - Step 5: Solve for x
x = 15,875,840,311.88/145,911.75 - Step 6: Final answer
x = 108,804.40
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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.