Finding the Fourth Proportional to 129,400.56, 193,789.80 and 73,828.08
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Solution
The fourth proportional to 129,400.56, 193,789.80 and 73,828.08 is: 110,564.66
Step by Step Solution
- Step 1: Write the proportion equation
129,400.56 : 193,789.80 = 73,828.08 : x - Step 2: Convert to fraction form
129,400.56/193,789.80 = 73,828.08/x - Step 3: Cross multiply
129,400.56x = 193,789.80 × 73,828.08 - Step 4: Simplify right side
129,400.56x = 14,307,128,857.58 - Step 5: Solve for x
x = 14,307,128,857.58/129,400.56 - Step 6: Final answer
x = 110,564.66
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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.