Finding the Fourth Proportional to 134,458.40, 201,687.60 and 87,219.20
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Solution
The fourth proportional to 134,458.40, 201,687.60 and 87,219.20 is: 130,828.80
Step by Step Solution
- Step 1: Write the proportion equation
134,458.40 : 201,687.60 = 87,219.20 : x - Step 2: Convert to fraction form
134,458.40/201,687.60 = 87,219.20/x - Step 3: Cross multiply
134,458.40x = 201,687.60 × 87,219.20 - Step 4: Simplify right side
134,458.40x = 17,591,031,121.92 - Step 5: Solve for x
x = 17,591,031,121.92/134,458.40 - Step 6: Final answer
x = 130,828.80
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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.