Finding the Fourth Proportional to 129,877.20, 194,815.80 and 125,989.20
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Solution
The fourth proportional to 129,877.20, 194,815.80 and 125,989.20 is: 188,983.80
Step by Step Solution
- Step 1: Write the proportion equation
129,877.20 : 194,815.80 = 125,989.20 : x - Step 2: Convert to fraction form
129,877.20/194,815.80 = 125,989.20/x - Step 3: Cross multiply
129,877.20x = 194,815.80 × 125,989.20 - Step 4: Simplify right side
129,877.20x = 24,544,686,789.36 - Step 5: Solve for x
x = 24,544,686,789.36/129,877.20 - Step 6: Final answer
x = 188,983.80
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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.