Finding the Fourth Proportional to 120,430.26, 166,203.12 and 66,720.24
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Solution
The fourth proportional to 120,430.26, 166,203.12 and 66,720.24 is: 92,079.12
Step by Step Solution
- Step 1: Write the proportion equation
120,430.26 : 166,203.12 = 66,720.24 : x - Step 2: Convert to fraction form
120,430.26/166,203.12 = 66,720.24/x - Step 3: Cross multiply
120,430.26x = 166,203.12 × 66,720.24 - Step 4: Simplify right side
120,430.26x = 11,089,112,055.15 - Step 5: Solve for x
x = 11,089,112,055.15/120,430.26 - Step 6: Final answer
x = 92,079.12
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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.