Finding the Fourth Proportional to 99,190.75, 136,832.41 and 63,342.99
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Solution
The fourth proportional to 99,190.75, 136,832.41 and 63,342.99 is: 87,380.87
Step by Step Solution
- Step 1: Write the proportion equation
99,190.75 : 136,832.41 = 63,342.99 : x - Step 2: Convert to fraction form
99,190.75/136,832.41 = 63,342.99/x - Step 3: Cross multiply
99,190.75x = 136,832.41 × 63,342.99 - Step 4: Simplify right side
99,190.75x = 8,667,373,978.31 - Step 5: Solve for x
x = 8,667,373,978.31/99,190.75 - Step 6: Final answer
x = 87,380.87
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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.