Finding the Fourth Proportional to 121,940.81, 168,262.22 and 68,219.99
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Solution
The fourth proportional to 121,940.81, 168,262.22 and 68,219.99 is: 94,134.58
Step by Step Solution
- Step 1: Write the proportion equation
121,940.81 : 168,262.22 = 68,219.99 : x - Step 2: Convert to fraction form
121,940.81/168,262.22 = 68,219.99/x - Step 3: Cross multiply
121,940.81x = 168,262.22 × 68,219.99 - Step 4: Simplify right side
121,940.81x = 11,478,846,624.68 - Step 5: Solve for x
x = 11,478,846,624.68/121,940.81 - Step 6: Final answer
x = 94,134.58
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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.