Finding the Fourth Proportional to 130,414.64, 195,489.60 and 74,138.48
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Solution
The fourth proportional to 130,414.64, 195,489.60 and 74,138.48 is: 111,132.48
Step by Step Solution
- Step 1: Write the proportion equation
130,414.64 : 195,489.60 = 74,138.48 : x - Step 2: Convert to fraction form
130,414.64/195,489.60 = 74,138.48/x - Step 3: Cross multiply
130,414.64x = 195,489.60 × 74,138.48 - Step 4: Simplify right side
130,414.64x = 14,493,301,799.81 - Step 5: Solve for x
x = 14,493,301,799.81/130,414.64 - Step 6: Final answer
x = 111,132.48
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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.