Finding the Fourth Proportional to 121,905.41, 168,243.41 and 68,204.03
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Solution
The fourth proportional to 121,905.41, 168,243.41 and 68,204.03 is: 94,129.36
Step by Step Solution
- Step 1: Write the proportion equation
121,905.41 : 168,243.41 = 68,204.03 : x - Step 2: Convert to fraction form
121,905.41/168,243.41 = 68,204.03/x - Step 3: Cross multiply
121,905.41x = 168,243.41 × 68,204.03 - Step 4: Simplify right side
121,905.41x = 11,474,877,912.24 - Step 5: Solve for x
x = 11,474,877,912.24/121,905.41 - Step 6: Final answer
x = 94,129.36
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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.