Finding the Fourth Proportional to 121,910.09, 168,269.74 and 70,932.67
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Solution
The fourth proportional to 121,910.09, 168,269.74 and 70,932.67 is: 97,906.75
Step by Step Solution
- Step 1: Write the proportion equation
121,910.09 : 168,269.74 = 70,932.67 : x - Step 2: Convert to fraction form
121,910.09/168,269.74 = 70,932.67/x - Step 3: Cross multiply
121,910.09x = 168,269.74 × 70,932.67 - Step 4: Simplify right side
121,910.09x = 11,935,821,340.40 - Step 5: Solve for x
x = 11,935,821,340.40/121,910.09 - Step 6: Final answer
x = 97,906.75
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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.