Finding the Fourth Proportional to 121,910.49, 168,243.39 and 68,197.77
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Solution
The fourth proportional to 121,910.49, 168,243.39 and 68,197.77 is: 94,116.79
Step by Step Solution
- Step 1: Write the proportion equation
121,910.49 : 168,243.39 = 68,197.77 : x - Step 2: Convert to fraction form
121,910.49/168,243.39 = 68,197.77/x - Step 3: Cross multiply
121,910.49x = 168,243.39 × 68,197.77 - Step 4: Simplify right side
121,910.49x = 11,473,824,015.24 - Step 5: Solve for x
x = 11,473,824,015.24/121,910.49 - Step 6: Final answer
x = 94,116.79
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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.