Finding the Fourth Proportional to 84,871.26, 127,124.64 and 79,902.84
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Solution
The fourth proportional to 84,871.26, 127,124.64 and 79,902.84 is: 119,682.68
Step by Step Solution
- Step 1: Write the proportion equation
84,871.26 : 127,124.64 = 79,902.84 : x - Step 2: Convert to fraction form
84,871.26/127,124.64 = 79,902.84/x - Step 3: Cross multiply
84,871.26x = 127,124.64 × 79,902.84 - Step 4: Simplify right side
84,871.26x = 10,157,619,769.98 - Step 5: Solve for x
x = 10,157,619,769.98/84,871.26 - Step 6: Final answer
x = 119,682.68
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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.