Finding the Fourth Proportional to 154,930.26, 213,803.80 and 87,862.26
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Solution
The fourth proportional to 154,930.26, 213,803.80 and 87,862.26 is: 121,249.94
Step by Step Solution
- Step 1: Write the proportion equation
154,930.26 : 213,803.80 = 87,862.26 : x - Step 2: Convert to fraction form
154,930.26/213,803.80 = 87,862.26/x - Step 3: Cross multiply
154,930.26x = 213,803.80 × 87,862.26 - Step 4: Simplify right side
154,930.26x = 18,785,285,064.59 - Step 5: Solve for x
x = 18,785,285,064.59/154,930.26 - Step 6: Final answer
x = 121,249.94
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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.