Finding the Fourth Proportional to 136,778.03, 188,785.17 and 80,207.63
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Solution
The fourth proportional to 136,778.03, 188,785.17 and 80,207.63 is: 110,704.99
Step by Step Solution
- Step 1: Write the proportion equation
136,778.03 : 188,785.17 = 80,207.63 : x - Step 2: Convert to fraction form
136,778.03/188,785.17 = 80,207.63/x - Step 3: Cross multiply
136,778.03x = 188,785.17 × 80,207.63 - Step 4: Simplify right side
136,778.03x = 15,142,011,064.85 - Step 5: Solve for x
x = 15,142,011,064.85/136,778.03 - Step 6: Final answer
x = 110,704.99
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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.