Finding the Fourth Proportional to 145,847.70, 218,771.55 and 133,381.80
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Solution
The fourth proportional to 145,847.70, 218,771.55 and 133,381.80 is: 200,072.70
Step by Step Solution
- Step 1: Write the proportion equation
145,847.70 : 218,771.55 = 133,381.80 : x - Step 2: Convert to fraction form
145,847.70/218,771.55 = 133,381.80/x - Step 3: Cross multiply
145,847.70x = 218,771.55 × 133,381.80 - Step 4: Simplify right side
145,847.70x = 29,180,143,127.79 - Step 5: Solve for x
x = 29,180,143,127.79/145,847.70 - Step 6: Final answer
x = 200,072.70
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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.