Finding the Fourth Proportional to 129,449.64, 193,758.88 and 69,394.60
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Solution
The fourth proportional to 129,449.64, 193,758.88 and 69,394.60 is: 103,869.12
Step by Step Solution
- Step 1: Write the proportion equation
129,449.64 : 193,758.88 = 69,394.60 : x - Step 2: Convert to fraction form
129,449.64/193,758.88 = 69,394.60/x - Step 3: Cross multiply
129,449.64x = 193,758.88 × 69,394.60 - Step 4: Simplify right side
129,449.64x = 13,445,819,974.05 - Step 5: Solve for x
x = 13,445,819,974.05/129,449.64 - Step 6: Final answer
x = 103,869.12
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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.