Finding the Fourth Proportional to 126,645.87, 190,043.40 and 46,740.09
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Solution
The fourth proportional to 126,645.87, 190,043.40 and 46,740.09 is: 70,137.67
Step by Step Solution
- Step 1: Write the proportion equation
126,645.87 : 190,043.40 = 46,740.09 : x - Step 2: Convert to fraction form
126,645.87/190,043.40 = 46,740.09/x - Step 3: Cross multiply
126,645.87x = 190,043.40 × 46,740.09 - Step 4: Simplify right side
126,645.87x = 8,882,645,619.91 - Step 5: Solve for x
x = 8,882,645,619.91/126,645.87 - Step 6: Final answer
x = 70,137.67
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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.