Finding the Fourth Proportional to 189,585.05, 261,745.69 and 120,713.38
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Solution
The fourth proportional to 189,585.05, 261,745.69 and 120,713.38 is: 166,659.80
Step by Step Solution
- Step 1: Write the proportion equation
189,585.05 : 261,745.69 = 120,713.38 : x - Step 2: Convert to fraction form
189,585.05/261,745.69 = 120,713.38/x - Step 3: Cross multiply
189,585.05x = 261,745.69 × 120,713.38 - Step 4: Simplify right side
189,585.05x = 31,596,205,631.60 - Step 5: Solve for x
x = 31,596,205,631.60/189,585.05 - Step 6: Final answer
x = 166,659.80
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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.