Finding the Fourth Proportional to 111,388.44, 153,701.84 and 63,644.88
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Solution
The fourth proportional to 111,388.44, 153,701.84 and 63,644.88 is: 87,821.82
Step by Step Solution
- Step 1: Write the proportion equation
111,388.44 : 153,701.84 = 63,644.88 : x - Step 2: Convert to fraction form
111,388.44/153,701.84 = 63,644.88/x - Step 3: Cross multiply
111,388.44x = 153,701.84 × 63,644.88 - Step 4: Simplify right side
111,388.44x = 9,782,335,162.58 - Step 5: Solve for x
x = 9,782,335,162.58/111,388.44 - Step 6: Final answer
x = 87,821.82
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.