Finding the Fourth Proportional to 142,716.13, 196,761.56 and 122,787.09
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Solution
The fourth proportional to 142,716.13, 196,761.56 and 122,787.09 is: 169,285.55
Step by Step Solution
- Step 1: Write the proportion equation
142,716.13 : 196,761.56 = 122,787.09 : x - Step 2: Convert to fraction form
142,716.13/196,761.56 = 122,787.09/x - Step 3: Cross multiply
142,716.13x = 196,761.56 × 122,787.09 - Step 4: Simplify right side
142,716.13x = 24,159,778,762.32 - Step 5: Solve for x
x = 24,159,778,762.32/142,716.13 - Step 6: Final answer
x = 169,285.55
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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.