Finding the Fourth Proportional to 127,021.19, 190,532.12 and 42,840.49
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Solution
The fourth proportional to 127,021.19, 190,532.12 and 42,840.49 is: 64,260.84
Step by Step Solution
- Step 1: Write the proportion equation
127,021.19 : 190,532.12 = 42,840.49 : x - Step 2: Convert to fraction form
127,021.19/190,532.12 = 42,840.49/x - Step 3: Cross multiply
127,021.19x = 190,532.12 × 42,840.49 - Step 4: Simplify right side
127,021.19x = 8,162,489,012.31 - Step 5: Solve for x
x = 8,162,489,012.31/127,021.19 - Step 6: Final answer
x = 64,260.84
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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.