Finding the Fourth Proportional to 83,190.90, 124,786.24 and 20,010.99
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Solution
The fourth proportional to 83,190.90, 124,786.24 and 20,010.99 is: 30,016.46
Step by Step Solution
- Step 1: Write the proportion equation
83,190.90 : 124,786.24 = 20,010.99 : x - Step 2: Convert to fraction form
83,190.90/124,786.24 = 20,010.99/x - Step 3: Cross multiply
83,190.90x = 124,786.24 × 20,010.99 - Step 4: Simplify right side
83,190.90x = 2,497,096,200.78 - Step 5: Solve for x
x = 2,497,096,200.78/83,190.90 - Step 6: Final answer
x = 30,016.46
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1.5x scale
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.