Finding the Fourth Proportional to 225,881.08, 311,710.18 and 129,078.78
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Solution
The fourth proportional to 225,881.08, 311,710.18 and 129,078.78 is: 178,125.45
Step by Step Solution
- Step 1: Write the proportion equation
225,881.08 : 311,710.18 = 129,078.78 : x - Step 2: Convert to fraction form
225,881.08/311,710.18 = 129,078.78/x - Step 3: Cross multiply
225,881.08x = 311,710.18 × 129,078.78 - Step 4: Simplify right side
225,881.08x = 40,235,168,738.57 - Step 5: Solve for x
x = 40,235,168,738.57/225,881.08 - Step 6: Final answer
x = 178,125.45
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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.