Finding the Fourth Proportional to 127,252.80, 190,879.20 and 121,420.80
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Solution
The fourth proportional to 127,252.80, 190,879.20 and 121,420.80 is: 182,131.20
Step by Step Solution
- Step 1: Write the proportion equation
127,252.80 : 190,879.20 = 121,420.80 : x - Step 2: Convert to fraction form
127,252.80/190,879.20 = 121,420.80/x - Step 3: Cross multiply
127,252.80x = 190,879.20 × 121,420.80 - Step 4: Simplify right side
127,252.80x = 23,176,705,167.36 - Step 5: Solve for x
x = 23,176,705,167.36/127,252.80 - Step 6: Final answer
x = 182,131.20
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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.