Finding the Fourth Proportional to 84,821.20, 127,231.80 and 76,526.80
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Solution
The fourth proportional to 84,821.20, 127,231.80 and 76,526.80 is: 114,790.20
Step by Step Solution
- Step 1: Write the proportion equation
84,821.20 : 127,231.80 = 76,526.80 : x - Step 2: Convert to fraction form
84,821.20/127,231.80 = 76,526.80/x - Step 3: Cross multiply
84,821.20x = 127,231.80 × 76,526.80 - Step 4: Simplify right side
84,821.20x = 9,736,642,512.24 - Step 5: Solve for x
x = 9,736,642,512.24/84,821.20 - Step 6: Final answer
x = 114,790.20
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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.