Finding the Fourth Proportional to 115,246.20, 172,869.30 and 79,816.80
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Solution
The fourth proportional to 115,246.20, 172,869.30 and 79,816.80 is: 119,725.20
Step by Step Solution
- Step 1: Write the proportion equation
115,246.20 : 172,869.30 = 79,816.80 : x - Step 2: Convert to fraction form
115,246.20/172,869.30 = 79,816.80/x - Step 3: Cross multiply
115,246.20x = 172,869.30 × 79,816.80 - Step 4: Simplify right side
115,246.20x = 13,797,874,344.24 - Step 5: Solve for x
x = 13,797,874,344.24/115,246.20 - Step 6: Final answer
x = 119,725.20
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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.