Finding the Fourth Proportional to 126,775.70, 190,163.55 and 118,999.70
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Solution
The fourth proportional to 126,775.70, 190,163.55 and 118,999.70 is: 178,499.55
Step by Step Solution
- Step 1: Write the proportion equation
126,775.70 : 190,163.55 = 118,999.70 : x - Step 2: Convert to fraction form
126,775.70/190,163.55 = 118,999.70/x - Step 3: Cross multiply
126,775.70x = 190,163.55 × 118,999.70 - Step 4: Simplify right side
126,775.70x = 22,629,405,400.94 - Step 5: Solve for x
x = 22,629,405,400.94/126,775.70 - Step 6: Final answer
x = 178,499.55
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Similar ratio
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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.