Finding the Fourth Proportional to 141,433.59, 195,161.99 and 81,000.63
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Solution
The fourth proportional to 141,433.59, 195,161.99 and 81,000.63 is: 111,771.50
Step by Step Solution
- Step 1: Write the proportion equation
141,433.59 : 195,161.99 = 81,000.63 : x - Step 2: Convert to fraction form
141,433.59/195,161.99 = 81,000.63/x - Step 3: Cross multiply
141,433.59x = 195,161.99 × 81,000.63 - Step 4: Simplify right side
141,433.59x = 15,808,244,142.05 - Step 5: Solve for x
x = 15,808,244,142.05/141,433.59 - Step 6: Final answer
x = 111,771.50
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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.