Finding the Fourth Proportional to 154,989.63, 213,830.67 and 101,305.65
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Solution
The fourth proportional to 154,989.63, 213,830.67 and 101,305.65 is: 139,765.83
Step by Step Solution
- Step 1: Write the proportion equation
154,989.63 : 213,830.67 = 101,305.65 : x - Step 2: Convert to fraction form
154,989.63/213,830.67 = 101,305.65/x - Step 3: Cross multiply
154,989.63x = 213,830.67 × 101,305.65 - Step 4: Simplify right side
154,989.63x = 21,662,255,014.29 - Step 5: Solve for x
x = 21,662,255,014.29/154,989.63 - Step 6: Final answer
x = 139,765.83
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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.