Finding the Fourth Proportional to 125,988.20, 188,982.30 and 83,997.80
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Solution
The fourth proportional to 125,988.20, 188,982.30 and 83,997.80 is: 125,996.70
Step by Step Solution
- Step 1: Write the proportion equation
125,988.20 : 188,982.30 = 83,997.80 : x - Step 2: Convert to fraction form
125,988.20/188,982.30 = 83,997.80/x - Step 3: Cross multiply
125,988.20x = 188,982.30 × 83,997.80 - Step 4: Simplify right side
125,988.20x = 15,874,097,438.94 - Step 5: Solve for x
x = 15,874,097,438.94/125,988.20 - Step 6: Final answer
x = 125,996.70
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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.