Finding the Fourth Proportional to 122,290.20, 183,435.30 and 86,860.80
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Solution
The fourth proportional to 122,290.20, 183,435.30 and 86,860.80 is: 130,291.20
Step by Step Solution
- Step 1: Write the proportion equation
122,290.20 : 183,435.30 = 86,860.80 : x - Step 2: Convert to fraction form
122,290.20/183,435.30 = 86,860.80/x - Step 3: Cross multiply
122,290.20x = 183,435.30 × 86,860.80 - Step 4: Simplify right side
122,290.20x = 15,933,336,906.24 - Step 5: Solve for x
x = 15,933,336,906.24/122,290.20 - Step 6: Final answer
x = 130,291.20
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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.