Finding the Fourth Proportional to 189,958.20, 284,937.30 and 79,135.80
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Solution
The fourth proportional to 189,958.20, 284,937.30 and 79,135.80 is: 118,703.70
Step by Step Solution
- Step 1: Write the proportion equation
189,958.20 : 284,937.30 = 79,135.80 : x - Step 2: Convert to fraction form
189,958.20/284,937.30 = 79,135.80/x - Step 3: Cross multiply
189,958.20x = 284,937.30 × 79,135.80 - Step 4: Simplify right side
189,958.20x = 22,548,741,185.34 - Step 5: Solve for x
x = 22,548,741,185.34/189,958.20 - Step 6: Final answer
x = 118,703.70
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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.