Finding the Fourth Proportional to 135,768.40, 203,652.42 and 76,577.20
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Solution
The fourth proportional to 135,768.40, 203,652.42 and 76,577.20 is: 114,865.70
Step by Step Solution
- Step 1: Write the proportion equation
135,768.40 : 203,652.42 = 76,577.20 : x - Step 2: Convert to fraction form
135,768.40/203,652.42 = 76,577.20/x - Step 3: Cross multiply
135,768.40x = 203,652.42 × 76,577.20 - Step 4: Simplify right side
135,768.40x = 15,595,132,096.82 - Step 5: Solve for x
x = 15,595,132,096.82/135,768.40 - Step 6: Final answer
x = 114,865.70
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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.