Finding the Fourth Proportional to 214,508.12, 321,846.93 and 81,423.70
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Solution
The fourth proportional to 214,508.12, 321,846.93 and 81,423.70 is: 122,167.72
Step by Step Solution
- Step 1: Write the proportion equation
214,508.12 : 321,846.93 = 81,423.70 : x - Step 2: Convert to fraction form
214,508.12/321,846.93 = 81,423.70/x - Step 3: Cross multiply
214,508.12x = 321,846.93 × 81,423.70 - Step 4: Simplify right side
214,508.12x = 26,205,967,874.24 - Step 5: Solve for x
x = 26,205,967,874.24/214,508.12 - Step 6: Final answer
x = 122,167.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.