Finding the Fourth Proportional to 121,620.80, 182,431.20 and 116,955.20
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Solution
The fourth proportional to 121,620.80, 182,431.20 and 116,955.20 is: 175,432.80
Step by Step Solution
- Step 1: Write the proportion equation
121,620.80 : 182,431.20 = 116,955.20 : x - Step 2: Convert to fraction form
121,620.80/182,431.20 = 116,955.20/x - Step 3: Cross multiply
121,620.80x = 182,431.20 × 116,955.20 - Step 4: Simplify right side
121,620.80x = 21,336,277,482.24 - Step 5: Solve for x
x = 21,336,277,482.24/121,620.80 - Step 6: Final answer
x = 175,432.80
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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.