Finding the Fourth Proportional to 120,134.26, 165,788.74 and 66,422.75
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Solution
The fourth proportional to 120,134.26, 165,788.74 and 66,422.75 is: 91,665.31
Step by Step Solution
- Step 1: Write the proportion equation
120,134.26 : 165,788.74 = 66,422.75 : x - Step 2: Convert to fraction form
120,134.26/165,788.74 = 66,422.75/x - Step 3: Cross multiply
120,134.26x = 165,788.74 × 66,422.75 - Step 4: Simplify right side
120,134.26x = 11,012,144,029.84 - Step 5: Solve for x
x = 11,012,144,029.84/120,134.26 - Step 6: Final answer
x = 91,665.31
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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.