Finding the Fourth Proportional to 129,207.00, 178,319.86 and 74,021.56
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Solution
The fourth proportional to 129,207.00, 178,319.86 and 74,021.56 is: 102,157.90
Step by Step Solution
- Step 1: Write the proportion equation
129,207.00 : 178,319.86 = 74,021.56 : x - Step 2: Convert to fraction form
129,207.00/178,319.86 = 74,021.56/x - Step 3: Cross multiply
129,207.00x = 178,319.86 × 74,021.56 - Step 4: Simplify right side
129,207.00x = 13,199,515,004.75 - Step 5: Solve for x
x = 13,199,515,004.75/129,207.00 - Step 6: Final answer
x = 102,157.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.