Finding the Fourth Proportional to 129,948.20, 194,922.30 and 94,518.80
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Solution
The fourth proportional to 129,948.20, 194,922.30 and 94,518.80 is: 141,778.20
Step by Step Solution
- Step 1: Write the proportion equation
129,948.20 : 194,922.30 = 94,518.80 : x - Step 2: Convert to fraction form
129,948.20/194,922.30 = 94,518.80/x - Step 3: Cross multiply
129,948.20x = 194,922.30 × 94,518.80 - Step 4: Simplify right side
129,948.20x = 18,423,821,889.24 - Step 5: Solve for x
x = 18,423,821,889.24/129,948.20 - Step 6: Final answer
x = 141,778.20
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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.