Finding the Fourth Proportional to 121,900.44, 168,230.07 and 68,189.07
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Solution
The fourth proportional to 121,900.44, 168,230.07 and 68,189.07 is: 94,105.09
Step by Step Solution
- Step 1: Write the proportion equation
121,900.44 : 168,230.07 = 68,189.07 : x - Step 2: Convert to fraction form
121,900.44/168,230.07 = 68,189.07/x - Step 3: Cross multiply
121,900.44x = 168,230.07 × 68,189.07 - Step 4: Simplify right side
121,900.44x = 11,471,451,678.39 - Step 5: Solve for x
x = 11,471,451,678.39/121,900.44 - Step 6: Final answer
x = 94,105.09
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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.