Finding the Fourth Proportional to 225,890.12, 311,722.76 and 129,087.84
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Solution
The fourth proportional to 225,890.12, 311,722.76 and 129,087.84 is: 178,138.02
Step by Step Solution
- Step 1: Write the proportion equation
225,890.12 : 311,722.76 = 129,087.84 : x - Step 2: Convert to fraction form
225,890.12/311,722.76 = 129,087.84/x - Step 3: Cross multiply
225,890.12x = 311,722.76 × 129,087.84 - Step 4: Simplify right side
225,890.12x = 40,239,617,767.24 - Step 5: Solve for x
x = 40,239,617,767.24/225,890.12 - Step 6: Final answer
x = 178,138.02
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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.