Finding the Fourth Proportional to 155,072.88, 214,211.79 and 121,506.08
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Solution
The fourth proportional to 155,072.88, 214,211.79 and 121,506.08 is: 167,843.88
Step by Step Solution
- Step 1: Write the proportion equation
155,072.88 : 214,211.79 = 121,506.08 : x - Step 2: Convert to fraction form
155,072.88/214,211.79 = 121,506.08/x - Step 3: Cross multiply
155,072.88x = 214,211.79 × 121,506.08 - Step 4: Simplify right side
155,072.88x = 26,028,033,821.62 - Step 5: Solve for x
x = 26,028,033,821.62/155,072.88 - Step 6: Final answer
x = 167,843.88
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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.