Finding the Fourth Proportional to 135,989.56, 203,811.60 and 76,858.48
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Solution
The fourth proportional to 135,989.56, 203,811.60 and 76,858.48 is: 115,190.09
Step by Step Solution
- Step 1: Write the proportion equation
135,989.56 : 203,811.60 = 76,858.48 : x - Step 2: Convert to fraction form
135,989.56/203,811.60 = 76,858.48/x - Step 3: Cross multiply
135,989.56x = 203,811.60 × 76,858.48 - Step 4: Simplify right side
135,989.56x = 15,664,649,782.37 - Step 5: Solve for x
x = 15,664,649,782.37/135,989.56 - Step 6: Final answer
x = 115,190.09
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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.