Finding the Fourth Proportional to 211,764.25, 292,233.81 and 121,120.09
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Solution
The fourth proportional to 211,764.25, 292,233.81 and 121,120.09 is: 167,145.23
Step by Step Solution
- Step 1: Write the proportion equation
211,764.25 : 292,233.81 = 121,120.09 : x - Step 2: Convert to fraction form
211,764.25/292,233.81 = 121,120.09/x - Step 3: Cross multiply
211,764.25x = 292,233.81 × 121,120.09 - Step 4: Simplify right side
211,764.25x = 35,395,384,203.27 - Step 5: Solve for x
x = 35,395,384,203.27/211,764.25 - Step 6: Final answer
x = 167,145.23
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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.