Finding the Fourth Proportional to 122,278.56, 168,738.48 and 68,569.44
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Solution
The fourth proportional to 122,278.56, 168,738.48 and 68,569.44 is: 94,622.50
Step by Step Solution
- Step 1: Write the proportion equation
122,278.56 : 168,738.48 = 68,569.44 : x - Step 2: Convert to fraction form
122,278.56/168,738.48 = 68,569.44/x - Step 3: Cross multiply
122,278.56x = 168,738.48 × 68,569.44 - Step 4: Simplify right side
122,278.56x = 11,570,303,080.05 - Step 5: Solve for x
x = 11,570,303,080.05/122,278.56 - Step 6: Final answer
x = 94,622.50
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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.