Finding the Fourth Proportional to 128,469.70, 192,704.55 and 128,469.70
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Solution
The fourth proportional to 128,469.70, 192,704.55 and 128,469.70 is: 192,704.55
Step by Step Solution
- Step 1: Write the proportion equation
128,469.70 : 192,704.55 = 128,469.70 : x - Step 2: Convert to fraction form
128,469.70/192,704.55 = 128,469.70/x - Step 3: Cross multiply
128,469.70x = 192,704.55 × 128,469.70 - Step 4: Simplify right side
128,469.70x = 24,756,695,727.14 - Step 5: Solve for x
x = 24,756,695,727.14/128,469.70 - Step 6: Final answer
x = 192,704.55
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1.5x scale
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.