Finding the Fourth Proportional to 143,603.88, 198,179.84 and 79,945.68
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Solution
The fourth proportional to 143,603.88, 198,179.84 and 79,945.68 is: 110,328.65
Step by Step Solution
- Step 1: Write the proportion equation
143,603.88 : 198,179.84 = 79,945.68 : x - Step 2: Convert to fraction form
143,603.88/198,179.84 = 79,945.68/x - Step 3: Cross multiply
143,603.88x = 198,179.84 × 79,945.68 - Step 4: Simplify right side
143,603.88x = 15,843,622,071.09 - Step 5: Solve for x
x = 15,843,622,071.09/143,603.88 - Step 6: Final answer
x = 110,328.65
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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.