Finding the Fourth Proportional to 208,794.99, 312,982.25 and 120,021.87
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Solution
The fourth proportional to 208,794.99, 312,982.25 and 120,021.87 is: 179,911.95
Step by Step Solution
- Step 1: Write the proportion equation
208,794.99 : 312,982.25 = 120,021.87 : x - Step 2: Convert to fraction form
208,794.99/312,982.25 = 120,021.87/x - Step 3: Cross multiply
208,794.99x = 312,982.25 × 120,021.87 - Step 4: Simplify right side
208,794.99x = 37,564,714,321.70 - Step 5: Solve for x
x = 37,564,714,321.70/208,794.99 - Step 6: Final answer
x = 179,911.95
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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.