Finding the Fourth Proportional to 136,678.97, 188,515.14 and 100,368.99
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Solution
The fourth proportional to 136,678.97, 188,515.14 and 100,368.99 is: 138,434.43
Step by Step Solution
- Step 1: Write the proportion equation
136,678.97 : 188,515.14 = 100,368.99 : x - Step 2: Convert to fraction form
136,678.97/188,515.14 = 100,368.99/x - Step 3: Cross multiply
136,678.97x = 188,515.14 × 100,368.99 - Step 4: Simplify right side
136,678.97x = 18,921,074,201.51 - Step 5: Solve for x
x = 18,921,074,201.51/136,678.97 - Step 6: Final answer
x = 138,434.43
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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.