Finding the Fourth Proportional to 143,551.81, 198,107.99 and 83,125.09
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Solution
The fourth proportional to 143,551.81, 198,107.99 and 83,125.09 is: 114,716.38
Step by Step Solution
- Step 1: Write the proportion equation
143,551.81 : 198,107.99 = 83,125.09 : x - Step 2: Convert to fraction form
143,551.81/198,107.99 = 83,125.09/x - Step 3: Cross multiply
143,551.81x = 198,107.99 × 83,125.09 - Step 4: Simplify right side
143,551.81x = 16,467,744,211.01 - Step 5: Solve for x
x = 16,467,744,211.01/143,551.81 - Step 6: Final answer
x = 114,716.38
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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.