Finding the Fourth Proportional to 135,798.40, 203,121.60 and 121,859.20
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Solution
The fourth proportional to 135,798.40, 203,121.60 and 121,859.20 is: 182,271.92
Step by Step Solution
- Step 1: Write the proportion equation
135,798.40 : 203,121.60 = 121,859.20 : x - Step 2: Convert to fraction form
135,798.40/203,121.60 = 121,859.20/x - Step 3: Cross multiply
135,798.40x = 203,121.60 × 121,859.20 - Step 4: Simplify right side
135,798.40x = 24,752,235,678.72 - Step 5: Solve for x
x = 24,752,235,678.72/135,798.40 - Step 6: Final answer
x = 182,271.92
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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.