Finding the Fourth Proportional to 100,110.44, 138,202.32 and 57,660.80
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Solution
The fourth proportional to 100,110.44, 138,202.32 and 57,660.80 is: 79,600.65
Step by Step Solution
- Step 1: Write the proportion equation
100,110.44 : 138,202.32 = 57,660.80 : x - Step 2: Convert to fraction form
100,110.44/138,202.32 = 57,660.80/x - Step 3: Cross multiply
100,110.44x = 138,202.32 × 57,660.80 - Step 4: Simplify right side
100,110.44x = 7,968,856,333.06 - Step 5: Solve for x
x = 7,968,856,333.06/100,110.44 - Step 6: Final answer
x = 79,600.65
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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.