Finding the Fourth Proportional to 83,929.20, 125,893.80 and 79,846.80
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Solution
The fourth proportional to 83,929.20, 125,893.80 and 79,846.80 is: 119,770.20
Step by Step Solution
- Step 1: Write the proportion equation
83,929.20 : 125,893.80 = 79,846.80 : x - Step 2: Convert to fraction form
83,929.20/125,893.80 = 79,846.80/x - Step 3: Cross multiply
83,929.20x = 125,893.80 × 79,846.80 - Step 4: Simplify right side
83,929.20x = 10,052,217,069.84 - Step 5: Solve for x
x = 10,052,217,069.84/83,929.20 - Step 6: Final answer
x = 119,770.20
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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.