Finding the Fourth Proportional to 121,895.11, 168,212.19 and 68,182.39
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Solution
The fourth proportional to 121,895.11, 168,212.19 and 68,182.39 is: 94,089.99
Step by Step Solution
- Step 1: Write the proportion equation
121,895.11 : 168,212.19 = 68,182.39 : x - Step 2: Convert to fraction form
121,895.11/168,212.19 = 68,182.39/x - Step 3: Cross multiply
121,895.11x = 168,212.19 × 68,182.39 - Step 4: Simplify right side
121,895.11x = 11,469,109,141.33 - Step 5: Solve for x
x = 11,469,109,141.33/121,895.11 - Step 6: Final answer
x = 94,089.99
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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.