Finding the Fourth Proportional to 106,138.20, 159,207.30 and 70,708.80
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Solution
The fourth proportional to 106,138.20, 159,207.30 and 70,708.80 is: 106,063.20
Step by Step Solution
- Step 1: Write the proportion equation
106,138.20 : 159,207.30 = 70,708.80 : x - Step 2: Convert to fraction form
106,138.20/159,207.30 = 70,708.80/x - Step 3: Cross multiply
106,138.20x = 159,207.30 × 70,708.80 - Step 4: Simplify right side
106,138.20x = 11,257,357,134.24 - Step 5: Solve for x
x = 11,257,357,134.24/106,138.20 - Step 6: Final answer
x = 106,063.20
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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.