Finding the Fourth Proportional to 143,745.49, 198,368.67 and 83,351.26
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Solution
The fourth proportional to 143,745.49, 198,368.67 and 83,351.26 is: 115,024.68
Step by Step Solution
- Step 1: Write the proportion equation
143,745.49 : 198,368.67 = 83,351.26 : x - Step 2: Convert to fraction form
143,745.49/198,368.67 = 83,351.26/x - Step 3: Cross multiply
143,745.49x = 198,368.67 × 83,351.26 - Step 4: Simplify right side
143,745.49x = 16,534,278,589.02 - Step 5: Solve for x
x = 16,534,278,589.02/143,745.49 - Step 6: Final answer
x = 115,024.68
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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.