Finding the Fourth Proportional to 134,121.20, 201,181.80 and 71,913.20
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Solution
The fourth proportional to 134,121.20, 201,181.80 and 71,913.20 is: 107,869.80
Step by Step Solution
- Step 1: Write the proportion equation
134,121.20 : 201,181.80 = 71,913.20 : x - Step 2: Convert to fraction form
134,121.20/201,181.80 = 71,913.20/x - Step 3: Cross multiply
134,121.20x = 201,181.80 × 71,913.20 - Step 4: Simplify right side
134,121.20x = 14,467,627,019.76 - Step 5: Solve for x
x = 14,467,627,019.76/134,121.20 - Step 6: Final answer
x = 107,869.80
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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.