Finding the Fourth Proportional to 74,134.20, 111,201.30 and 71,509.80
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Solution
The fourth proportional to 74,134.20, 111,201.30 and 71,509.80 is: 107,264.70
Step by Step Solution
- Step 1: Write the proportion equation
74,134.20 : 111,201.30 = 71,509.80 : x - Step 2: Convert to fraction form
74,134.20/111,201.30 = 71,509.80/x - Step 3: Cross multiply
74,134.20x = 111,201.30 × 71,509.80 - Step 4: Simplify right side
74,134.20x = 7,951,982,722.74 - Step 5: Solve for x
x = 7,951,982,722.74/74,134.20 - Step 6: Final answer
x = 107,264.70
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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.