Finding the Fourth Proportional to 135,393.85, 186,884.01 and 87,650.42
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Solution
The fourth proportional to 135,393.85, 186,884.01 and 87,650.42 is: 120,983.79
Step by Step Solution
- Step 1: Write the proportion equation
135,393.85 : 186,884.01 = 87,650.42 : x - Step 2: Convert to fraction form
135,393.85/186,884.01 = 87,650.42/x - Step 3: Cross multiply
135,393.85x = 186,884.01 × 87,650.42 - Step 4: Simplify right side
135,393.85x = 16,380,461,529.53 - Step 5: Solve for x
x = 16,380,461,529.53/135,393.85 - Step 6: Final answer
x = 120,983.79
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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.