Finding the Fourth Proportional to 125,930.80, 188,458.80 and 86,564.80
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Solution
The fourth proportional to 125,930.80, 188,458.80 and 86,564.80 is: 129,546.53
Step by Step Solution
- Step 1: Write the proportion equation
125,930.80 : 188,458.80 = 86,564.80 : x - Step 2: Convert to fraction form
125,930.80/188,458.80 = 86,564.80/x - Step 3: Cross multiply
125,930.80x = 188,458.80 × 86,564.80 - Step 4: Simplify right side
125,930.80x = 16,313,898,330.24 - Step 5: Solve for x
x = 16,313,898,330.24/125,930.80 - Step 6: Final answer
x = 129,546.53
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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.