Finding the Fourth Proportional to 145,728.24, 201,115.26 and 81,201.75
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Solution
The fourth proportional to 145,728.24, 201,115.26 and 81,201.75 is: 112,064.15
Step by Step Solution
- Step 1: Write the proportion equation
145,728.24 : 201,115.26 = 81,201.75 : x - Step 2: Convert to fraction form
145,728.24/201,115.26 = 81,201.75/x - Step 3: Cross multiply
145,728.24x = 201,115.26 × 81,201.75 - Step 4: Simplify right side
145,728.24x = 16,330,911,063.71 - Step 5: Solve for x
x = 16,330,911,063.71/145,728.24 - Step 6: Final answer
x = 112,064.15
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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.