Finding the Fourth Proportional to 143,943.99, 198,642.97 and 80,285.88
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Solution
The fourth proportional to 143,943.99, 198,642.97 and 80,285.88 is: 110,794.67
Step by Step Solution
- Step 1: Write the proportion equation
143,943.99 : 198,642.97 = 80,285.88 : x - Step 2: Convert to fraction form
143,943.99/198,642.97 = 80,285.88/x - Step 3: Cross multiply
143,943.99x = 198,642.97 × 80,285.88 - Step 4: Simplify right side
143,943.99x = 15,948,226,045.92 - Step 5: Solve for x
x = 15,948,226,045.92/143,943.99 - Step 6: Final answer
x = 110,794.67
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1.5x scale
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.