Finding the Fourth Proportional to 120,149.64, 165,799.38 and 66,430.44
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Solution
The fourth proportional to 120,149.64, 165,799.38 and 66,430.44 is: 91,670.07
Step by Step Solution
- Step 1: Write the proportion equation
120,149.64 : 165,799.38 = 66,430.44 : x - Step 2: Convert to fraction form
120,149.64/165,799.38 = 66,430.44/x - Step 3: Cross multiply
120,149.64x = 165,799.38 × 66,430.44 - Step 4: Simplify right side
120,149.64x = 11,014,125,765.13 - Step 5: Solve for x
x = 11,014,125,765.13/120,149.64 - Step 6: Final answer
x = 91,670.07
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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.