Finding the Fourth Proportional to 138,423.20, 207,496.56 and 68,352.80
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Solution
The fourth proportional to 138,423.20, 207,496.56 and 68,352.80 is: 102,460.94
Step by Step Solution
- Step 1: Write the proportion equation
138,423.20 : 207,496.56 = 68,352.80 : x - Step 2: Convert to fraction form
138,423.20/207,496.56 = 68,352.80/x - Step 3: Cross multiply
138,423.20x = 207,496.56 × 68,352.80 - Step 4: Simplify right side
138,423.20x = 14,182,970,866.37 - Step 5: Solve for x
x = 14,182,970,866.37/138,423.20 - Step 6: Final answer
x = 102,460.94
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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.