Finding the Fourth Proportional to 172,340.75, 258,556.68 and 78,824.63
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Solution
The fourth proportional to 172,340.75, 258,556.68 and 78,824.63 is: 118,257.78
Step by Step Solution
- Step 1: Write the proportion equation
172,340.75 : 258,556.68 = 78,824.63 : x - Step 2: Convert to fraction form
172,340.75/258,556.68 = 78,824.63/x - Step 3: Cross multiply
172,340.75x = 258,556.68 × 78,824.63 - Step 4: Simplify right side
172,340.75x = 20,380,633,342.25 - Step 5: Solve for x
x = 20,380,633,342.25/172,340.75 - Step 6: Final answer
x = 118,257.78
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.