Finding the Fourth Proportional to 154,139.52, 230,627.90 and 90,993.99
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Solution
The fourth proportional to 154,139.52, 230,627.90 and 90,993.99 is: 136,147.78
Step by Step Solution
- Step 1: Write the proportion equation
154,139.52 : 230,627.90 = 90,993.99 : x - Step 2: Convert to fraction form
154,139.52/230,627.90 = 90,993.99/x - Step 3: Cross multiply
154,139.52x = 230,627.90 × 90,993.99 - Step 4: Simplify right side
154,139.52x = 20,985,753,662.74 - Step 5: Solve for x
x = 20,985,753,662.74/154,139.52 - Step 6: Final answer
x = 136,147.78
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.