Finding the Fourth Proportional to 201,847.75, 278,549.90 and 112,423.75
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Solution
The fourth proportional to 201,847.75, 278,549.90 and 112,423.75 is: 155,144.78
Step by Step Solution
- Step 1: Write the proportion equation
201,847.75 : 278,549.90 = 112,423.75 : x - Step 2: Convert to fraction form
201,847.75/278,549.90 = 112,423.75/x - Step 3: Cross multiply
201,847.75x = 278,549.90 × 112,423.75 - Step 4: Simplify right side
201,847.75x = 31,315,624,320.13 - Step 5: Solve for x
x = 31,315,624,320.13/201,847.75 - Step 6: Final answer
x = 155,144.78
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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.