Finding the Fourth Proportional to 143,687.99, 198,295.55 and 80,025.78
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Solution
The fourth proportional to 143,687.99, 198,295.55 and 80,025.78 is: 110,438.99
Step by Step Solution
- Step 1: Write the proportion equation
143,687.99 : 198,295.55 = 80,025.78 : x - Step 2: Convert to fraction form
143,687.99/198,295.55 = 80,025.78/x - Step 3: Cross multiply
143,687.99x = 198,295.55 × 80,025.78 - Step 4: Simplify right side
143,687.99x = 15,868,756,059.28 - Step 5: Solve for x
x = 15,868,756,059.28/143,687.99 - Step 6: Final answer
x = 110,438.99
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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.