Finding the Fourth Proportional to 211,765.63, 292,235.71 and 121,121.46
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Solution
The fourth proportional to 211,765.63, 292,235.71 and 121,121.46 is: 167,147.12
Step by Step Solution
- Step 1: Write the proportion equation
211,765.63 : 292,235.71 = 121,121.46 : x - Step 2: Convert to fraction form
211,765.63/292,235.71 = 121,121.46/x - Step 3: Cross multiply
211,765.63x = 292,235.71 × 121,121.46 - Step 4: Simplify right side
211,765.63x = 35,396,015,859.34 - Step 5: Solve for x
x = 35,396,015,859.34/211,765.63 - Step 6: Final answer
x = 167,147.12
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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.