Finding the Fourth Proportional to 129,918.40, 194,877.60 and 122,045.20
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Solution
The fourth proportional to 129,918.40, 194,877.60 and 122,045.20 is: 183,067.80
Step by Step Solution
- Step 1: Write the proportion equation
129,918.40 : 194,877.60 = 122,045.20 : x - Step 2: Convert to fraction form
129,918.40/194,877.60 = 122,045.20/x - Step 3: Cross multiply
129,918.40x = 194,877.60 × 122,045.20 - Step 4: Simplify right side
129,918.40x = 23,783,875,667.52 - Step 5: Solve for x
x = 23,783,875,667.52/129,918.40 - Step 6: Final answer
x = 183,067.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.