Finding the Fourth Proportional to 125,819.80, 188,729.70 and 119,987.80
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Solution
The fourth proportional to 125,819.80, 188,729.70 and 119,987.80 is: 179,981.70
Step by Step Solution
- Step 1: Write the proportion equation
125,819.80 : 188,729.70 = 119,987.80 : x - Step 2: Convert to fraction form
125,819.80/188,729.70 = 119,987.80/x - Step 3: Cross multiply
125,819.80x = 188,729.70 × 119,987.80 - Step 4: Simplify right side
125,819.80x = 22,645,261,497.66 - Step 5: Solve for x
x = 22,645,261,497.66/125,819.80 - Step 6: Final answer
x = 179,981.70
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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.