Finding the Fourth Proportional to 100,118.16, 138,161.82 and 54,795.96
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Solution
The fourth proportional to 100,118.16, 138,161.82 and 54,795.96 is: 75,617.75
Step by Step Solution
- Step 1: Write the proportion equation
100,118.16 : 138,161.82 = 54,795.96 : x - Step 2: Convert to fraction form
100,118.16/138,161.82 = 54,795.96/x - Step 3: Cross multiply
100,118.16x = 138,161.82 × 54,795.96 - Step 4: Simplify right side
100,118.16x = 7,570,709,562.25 - Step 5: Solve for x
x = 7,570,709,562.25/100,118.16 - Step 6: Final answer
x = 75,617.75
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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.