Finding the Fourth Proportional to 113,678.21, 170,555.25 and 75,878.65
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Solution
The fourth proportional to 113,678.21, 170,555.25 and 75,878.65 is: 113,843.29
Step by Step Solution
- Step 1: Write the proportion equation
113,678.21 : 170,555.25 = 75,878.65 : x - Step 2: Convert to fraction form
113,678.21/170,555.25 = 75,878.65/x - Step 3: Cross multiply
113,678.21x = 170,555.25 × 75,878.65 - Step 4: Simplify right side
113,678.21x = 12,941,501,498.24 - Step 5: Solve for x
x = 12,941,501,498.24/113,678.21 - Step 6: Final answer
x = 113,843.29
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1.5x scale
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.