Finding the Fourth Proportional to 122,362.11, 168,856.92 and 68,645.88
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Solution
The fourth proportional to 122,362.11, 168,856.92 and 68,645.88 is: 94,729.75
Step by Step Solution
- Step 1: Write the proportion equation
122,362.11 : 168,856.92 = 68,645.88 : x - Step 2: Convert to fraction form
122,362.11/168,856.92 = 68,645.88/x - Step 3: Cross multiply
122,362.11x = 168,856.92 × 68,645.88 - Step 4: Simplify right side
122,362.11x = 11,591,331,867.49 - Step 5: Solve for x
x = 11,591,331,867.49/122,362.11 - Step 6: Final answer
x = 94,729.75
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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.