Finding the Fourth Proportional to 143,621.43, 198,206.24 and 83,211.09
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Solution
The fourth proportional to 143,621.43, 198,206.24 and 83,211.09 is: 114,836.32
Step by Step Solution
- Step 1: Write the proportion equation
143,621.43 : 198,206.24 = 83,211.09 : x - Step 2: Convert to fraction form
143,621.43/198,206.24 = 83,211.09/x - Step 3: Cross multiply
143,621.43x = 198,206.24 × 83,211.09 - Step 4: Simplify right side
143,621.43x = 16,492,956,859.15 - Step 5: Solve for x
x = 16,492,956,859.15/143,621.43 - Step 6: Final answer
x = 114,836.32
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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.