Finding the Fourth Proportional to 142,719.14, 196,765.70 and 122,790.09
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Solution
The fourth proportional to 142,719.14, 196,765.70 and 122,790.09 is: 169,289.68
Step by Step Solution
- Step 1: Write the proportion equation
142,719.14 : 196,765.70 = 122,790.09 : x - Step 2: Convert to fraction form
142,719.14/196,765.70 = 122,790.09/x - Step 3: Cross multiply
142,719.14x = 196,765.70 × 122,790.09 - Step 4: Simplify right side
142,719.14x = 24,160,877,397.96 - Step 5: Solve for x
x = 24,160,877,397.96/142,719.14 - Step 6: Final answer
x = 169,289.68
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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.