Finding the Fourth Proportional to 129,990.36, 194,985.60 and 46,884.36
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Solution
The fourth proportional to 129,990.36, 194,985.60 and 46,884.36 is: 70,326.56
Step by Step Solution
- Step 1: Write the proportion equation
129,990.36 : 194,985.60 = 46,884.36 : x - Step 2: Convert to fraction form
129,990.36/194,985.60 = 46,884.36/x - Step 3: Cross multiply
129,990.36x = 194,985.60 × 46,884.36 - Step 4: Simplify right side
129,990.36x = 9,141,775,065.22 - Step 5: Solve for x
x = 9,141,775,065.22/129,990.36 - Step 6: Final answer
x = 70,326.56
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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.