Finding the Fourth Proportional to 189,649.44, 261,627.39 and 121,633.74
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Solution
The fourth proportional to 189,649.44, 261,627.39 and 121,633.74 is: 167,797.58
Step by Step Solution
- Step 1: Write the proportion equation
189,649.44 : 261,627.39 = 121,633.74 : x - Step 2: Convert to fraction form
189,649.44/261,627.39 = 121,633.74/x - Step 3: Cross multiply
189,649.44x = 261,627.39 × 121,633.74 - Step 4: Simplify right side
189,649.44x = 31,822,717,932.14 - Step 5: Solve for x
x = 31,822,717,932.14/189,649.44 - Step 6: Final answer
x = 167,797.58
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1.5x scale
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.