Finding the Fourth Proportional to 154,176.96, 212,761.44 and 87,107.52
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Solution
The fourth proportional to 154,176.96, 212,761.44 and 87,107.52 is: 120,206.82
Step by Step Solution
- Step 1: Write the proportion equation
154,176.96 : 212,761.44 = 87,107.52 : x - Step 2: Convert to fraction form
154,176.96/212,761.44 = 87,107.52/x - Step 3: Cross multiply
154,176.96x = 212,761.44 × 87,107.52 - Step 4: Simplify right side
154,176.96x = 18,533,121,390.03 - Step 5: Solve for x
x = 18,533,121,390.03/154,176.96 - Step 6: Final answer
x = 120,206.82
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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.