Finding the Fourth Proportional to 84,816.20, 127,224.30 and 79,977.80
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Solution
The fourth proportional to 84,816.20, 127,224.30 and 79,977.80 is: 119,966.70
Step by Step Solution
- Step 1: Write the proportion equation
84,816.20 : 127,224.30 = 79,977.80 : x - Step 2: Convert to fraction form
84,816.20/127,224.30 = 79,977.80/x - Step 3: Cross multiply
84,816.20x = 127,224.30 × 79,977.80 - Step 4: Simplify right side
84,816.20x = 10,175,119,620.54 - Step 5: Solve for x
x = 10,175,119,620.54/84,816.20 - Step 6: Final answer
x = 119,966.70
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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.