Finding the Fourth Proportional to 140,722.30, 211,068.69 and 74,135.62
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Solution
The fourth proportional to 140,722.30, 211,068.69 and 74,135.62 is: 111,195.65
Step by Step Solution
- Step 1: Write the proportion equation
140,722.30 : 211,068.69 = 74,135.62 : x - Step 2: Convert to fraction form
140,722.30/211,068.69 = 74,135.62/x - Step 3: Cross multiply
140,722.30x = 211,068.69 × 74,135.62 - Step 4: Simplify right side
140,722.30x = 15,647,708,195.74 - Step 5: Solve for x
x = 15,647,708,195.74/140,722.30 - Step 6: Final answer
x = 111,195.65
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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.