Finding the Fourth Proportional to 120,132.26, 165,785.98 and 66,420.75
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Solution
The fourth proportional to 120,132.26, 165,785.98 and 66,420.75 is: 91,662.55
Step by Step Solution
- Step 1: Write the proportion equation
120,132.26 : 165,785.98 = 66,420.75 : x - Step 2: Convert to fraction form
120,132.26/165,785.98 = 66,420.75/x - Step 3: Cross multiply
120,132.26x = 165,785.98 × 66,420.75 - Step 4: Simplify right side
120,132.26x = 11,011,629,131.09 - Step 5: Solve for x
x = 11,011,629,131.09/120,132.26 - Step 6: Final answer
x = 91,662.55
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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.