Finding the Fourth Proportional to 126,993.15, 190,476.36 and 52,121.21
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Solution
The fourth proportional to 126,993.15, 190,476.36 and 52,121.21 is: 78,176.32
Step by Step Solution
- Step 1: Write the proportion equation
126,993.15 : 190,476.36 = 52,121.21 : x - Step 2: Convert to fraction form
126,993.15/190,476.36 = 52,121.21/x - Step 3: Cross multiply
126,993.15x = 190,476.36 × 52,121.21 - Step 4: Simplify right side
126,993.15x = 9,927,857,407.21 - Step 5: Solve for x
x = 9,927,857,407.21/126,993.15 - Step 6: Final answer
x = 78,176.32
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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.