Finding the Fourth Proportional to 121,415.84, 167,640.16 and 101,324.64
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Solution
The fourth proportional to 121,415.84, 167,640.16 and 101,324.64 is: 139,900.02
Step by Step Solution
- Step 1: Write the proportion equation
121,415.84 : 167,640.16 = 101,324.64 : x - Step 2: Convert to fraction form
121,415.84/167,640.16 = 101,324.64/x - Step 3: Cross multiply
121,415.84x = 167,640.16 × 101,324.64 - Step 4: Simplify right side
121,415.84x = 16,986,078,861.54 - Step 5: Solve for x
x = 16,986,078,861.54/121,415.84 - Step 6: Final answer
x = 139,900.02
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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.