Finding the Fourth Proportional to 121,843.98, 168,133.23 and 68,121.54
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Solution
The fourth proportional to 121,843.98, 168,133.23 and 68,121.54 is: 94,001.32
Step by Step Solution
- Step 1: Write the proportion equation
121,843.98 : 168,133.23 = 68,121.54 : x - Step 2: Convert to fraction form
121,843.98/168,133.23 = 68,121.54/x - Step 3: Cross multiply
121,843.98x = 168,133.23 × 68,121.54 - Step 4: Simplify right side
121,843.98x = 11,453,494,552.77 - Step 5: Solve for x
x = 11,453,494,552.77/121,843.98 - Step 6: Final answer
x = 94,001.32
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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.