Finding the Fourth Proportional to 142,782.08, 197,036.96 and 79,119.68
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Solution
The fourth proportional to 142,782.08, 197,036.96 and 79,119.68 is: 109,183.88
Step by Step Solution
- Step 1: Write the proportion equation
142,782.08 : 197,036.96 = 79,119.68 : x - Step 2: Convert to fraction form
142,782.08/197,036.96 = 79,119.68/x - Step 3: Cross multiply
142,782.08x = 197,036.96 × 79,119.68 - Step 4: Simplify right side
142,782.08x = 15,589,501,223.37 - Step 5: Solve for x
x = 15,589,501,223.37/142,782.08 - Step 6: Final answer
x = 109,183.88
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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.