Finding the Fourth Proportional to 122,149.91, 168,570.17 and 68,433.75
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Solution
The fourth proportional to 122,149.91, 168,570.17 and 68,433.75 is: 94,440.42
Step by Step Solution
- Step 1: Write the proportion equation
122,149.91 : 168,570.17 = 68,433.75 : x - Step 2: Convert to fraction form
122,149.91/168,570.17 = 68,433.75/x - Step 3: Cross multiply
122,149.91x = 168,570.17 × 68,433.75 - Step 4: Simplify right side
122,149.91x = 11,535,888,529.07 - Step 5: Solve for x
x = 11,535,888,529.07/122,149.91 - Step 6: Final answer
x = 94,440.42
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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.