Finding the Fourth Proportional to 128,590.08, 192,915.84 and 53,668.56
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Solution
The fourth proportional to 128,590.08, 192,915.84 and 53,668.56 is: 80,515.66
Step by Step Solution
- Step 1: Write the proportion equation
128,590.08 : 192,915.84 = 53,668.56 : x - Step 2: Convert to fraction form
128,590.08/192,915.84 = 53,668.56/x - Step 3: Cross multiply
128,590.08x = 192,915.84 × 53,668.56 - Step 4: Simplify right side
128,590.08x = 10,353,515,333.99 - Step 5: Solve for x
x = 10,353,515,333.99/128,590.08 - Step 6: Final answer
x = 80,515.66
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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.