Finding the Fourth Proportional to 100,357.02, 138,378.51 and 82,149.84
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Solution
The fourth proportional to 100,357.02, 138,378.51 and 82,149.84 is: 113,273.32
Step by Step Solution
- Step 1: Write the proportion equation
100,357.02 : 138,378.51 = 82,149.84 : x - Step 2: Convert to fraction form
100,357.02/138,378.51 = 82,149.84/x - Step 3: Cross multiply
100,357.02x = 138,378.51 × 82,149.84 - Step 4: Simplify right side
100,357.02x = 11,367,772,455.94 - Step 5: Solve for x
x = 11,367,772,455.94/100,357.02 - Step 6: Final answer
x = 113,273.32
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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.