Finding the Fourth Proportional to 126,115.44, 174,120.36 and 78,433.68
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Solution
The fourth proportional to 126,115.44, 174,120.36 and 78,433.68 is: 108,288.89
Step by Step Solution
- Step 1: Write the proportion equation
126,115.44 : 174,120.36 = 78,433.68 : x - Step 2: Convert to fraction form
126,115.44/174,120.36 = 78,433.68/x - Step 3: Cross multiply
126,115.44x = 174,120.36 × 78,433.68 - Step 4: Simplify right side
126,115.44x = 13,656,900,597.72 - Step 5: Solve for x
x = 13,656,900,597.72/126,115.44 - Step 6: Final answer
x = 108,288.89
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1.5x scale
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.