Finding the Fourth Proportional to 83,984.70, 125,977.05 and 79,902.30
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Solution
The fourth proportional to 83,984.70, 125,977.05 and 79,902.30 is: 119,853.45
Step by Step Solution
- Step 1: Write the proportion equation
83,984.70 : 125,977.05 = 79,902.30 : x - Step 2: Convert to fraction form
83,984.70/125,977.05 = 79,902.30/x - Step 3: Cross multiply
83,984.70x = 125,977.05 × 79,902.30 - Step 4: Simplify right side
83,984.70x = 10,065,856,042.22 - Step 5: Solve for x
x = 10,065,856,042.22/83,984.70 - Step 6: Final answer
x = 119,853.45
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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.