Finding the Fourth Proportional to 142,735.68, 213,945.12 and 72,469.44
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Solution
The fourth proportional to 142,735.68, 213,945.12 and 72,469.44 is: 108,623.74
Step by Step Solution
- Step 1: Write the proportion equation
142,735.68 : 213,945.12 = 72,469.44 : x - Step 2: Convert to fraction form
142,735.68/213,945.12 = 72,469.44/x - Step 3: Cross multiply
142,735.68x = 213,945.12 × 72,469.44 - Step 4: Simplify right side
142,735.68x = 15,504,483,037.13 - Step 5: Solve for x
x = 15,504,483,037.13/142,735.68 - Step 6: Final answer
x = 108,623.74
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.