Finding the Fourth Proportional to 125,843.88, 188,765.62 and 86,281.06
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Solution
The fourth proportional to 125,843.88, 188,765.62 and 86,281.06 is: 129,421.45
Step by Step Solution
- Step 1: Write the proportion equation
125,843.88 : 188,765.62 = 86,281.06 : x - Step 2: Convert to fraction form
125,843.88/188,765.62 = 86,281.06/x - Step 3: Cross multiply
125,843.88x = 188,765.62 × 86,281.06 - Step 4: Simplify right side
125,843.88x = 16,286,897,785.16 - Step 5: Solve for x
x = 16,286,897,785.16/125,843.88 - Step 6: Final answer
x = 129,421.45
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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.