Finding the Fourth Proportional to 100,524.09, 138,725.36 and 55,202.77
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Solution
The fourth proportional to 100,524.09, 138,725.36 and 55,202.77 is: 76,180.98
Step by Step Solution
- Step 1: Write the proportion equation
100,524.09 : 138,725.36 = 55,202.77 : x - Step 2: Convert to fraction form
100,524.09/138,725.36 = 55,202.77/x - Step 3: Cross multiply
100,524.09x = 138,725.36 × 55,202.77 - Step 4: Simplify right side
100,524.09x = 7,658,023,465.32 - Step 5: Solve for x
x = 7,658,023,465.32/100,524.09 - Step 6: Final answer
x = 76,180.98
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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.