Finding the Fourth Proportional to 122,569.20, 183,853.80 and 121,791.60
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Solution
The fourth proportional to 122,569.20, 183,853.80 and 121,791.60 is: 182,687.40
Step by Step Solution
- Step 1: Write the proportion equation
122,569.20 : 183,853.80 = 121,791.60 : x - Step 2: Convert to fraction form
122,569.20/183,853.80 = 121,791.60/x - Step 3: Cross multiply
122,569.20x = 183,853.80 × 121,791.60 - Step 4: Simplify right side
122,569.20x = 22,391,848,468.08 - Step 5: Solve for x
x = 22,391,848,468.08/122,569.20 - Step 6: Final answer
x = 182,687.40
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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.