Finding the Fourth Proportional to 125,983.20, 188,715.60 and 86,584.80
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Solution
The fourth proportional to 125,983.20, 188,715.60 and 86,584.80 is: 129,699.06
Step by Step Solution
- Step 1: Write the proportion equation
125,983.20 : 188,715.60 = 86,584.80 : x - Step 2: Convert to fraction form
125,983.20/188,715.60 = 86,584.80/x - Step 3: Cross multiply
125,983.20x = 188,715.60 × 86,584.80 - Step 4: Simplify right side
125,983.20x = 16,339,902,482.88 - Step 5: Solve for x
x = 16,339,902,482.88/125,983.20 - Step 6: Final answer
x = 129,699.06
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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.