Finding the Fourth Proportional to 125,929.45, 188,893.97 and 86,366.62
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Solution
The fourth proportional to 125,929.45, 188,893.97 and 86,366.62 is: 129,549.78
Step by Step Solution
- Step 1: Write the proportion equation
125,929.45 : 188,893.97 = 86,366.62 : x - Step 2: Convert to fraction form
125,929.45/188,893.97 = 86,366.62/x - Step 3: Cross multiply
125,929.45x = 188,893.97 × 86,366.62 - Step 4: Simplify right side
125,929.45x = 16,314,132,823.21 - Step 5: Solve for x
x = 16,314,132,823.21/125,929.45 - Step 6: Final answer
x = 129,549.78
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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.