Finding the Fourth Proportional to 97,979.40, 146,750.40 and 75,720.60
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Solution
The fourth proportional to 97,979.40, 146,750.40 and 75,720.60 is: 113,411.88
Step by Step Solution
- Step 1: Write the proportion equation
97,979.40 : 146,750.40 = 75,720.60 : x - Step 2: Convert to fraction form
97,979.40/146,750.40 = 75,720.60/x - Step 3: Cross multiply
97,979.40x = 146,750.40 × 75,720.60 - Step 4: Simplify right side
97,979.40x = 11,112,028,338.24 - Step 5: Solve for x
x = 11,112,028,338.24/97,979.40 - Step 6: Final answer
x = 113,411.88
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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.