Finding the Fourth Proportional to 115,519.80, 173,279.70 and 53,311.80
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Solution
The fourth proportional to 115,519.80, 173,279.70 and 53,311.80 is: 79,967.70
Step by Step Solution
- Step 1: Write the proportion equation
115,519.80 : 173,279.70 = 53,311.80 : x - Step 2: Convert to fraction form
115,519.80/173,279.70 = 53,311.80/x - Step 3: Cross multiply
115,519.80x = 173,279.70 × 53,311.80 - Step 4: Simplify right side
115,519.80x = 9,237,852,710.46 - Step 5: Solve for x
x = 9,237,852,710.46/115,519.80 - Step 6: Final answer
x = 79,967.70
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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.