Finding the Fourth Proportional to 125,844.51, 188,766.69 and 86,281.68
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Solution
The fourth proportional to 125,844.51, 188,766.69 and 86,281.68 is: 129,422.47
Step by Step Solution
- Step 1: Write the proportion equation
125,844.51 : 188,766.69 = 86,281.68 : x - Step 2: Convert to fraction form
125,844.51/188,766.69 = 86,281.68/x - Step 3: Cross multiply
125,844.51x = 188,766.69 × 86,281.68 - Step 4: Simplify right side
125,844.51x = 16,287,107,141.24 - Step 5: Solve for x
x = 16,287,107,141.24/125,844.51 - Step 6: Final answer
x = 129,422.47
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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.