Finding the Fourth Proportional to 138,327.70, 207,491.55 and 125,861.80
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Solution
The fourth proportional to 138,327.70, 207,491.55 and 125,861.80 is: 188,792.70
Step by Step Solution
- Step 1: Write the proportion equation
138,327.70 : 207,491.55 = 125,861.80 : x - Step 2: Convert to fraction form
138,327.70/207,491.55 = 125,861.80/x - Step 3: Cross multiply
138,327.70x = 207,491.55 × 125,861.80 - Step 4: Simplify right side
138,327.70x = 26,115,259,967.79 - Step 5: Solve for x
x = 26,115,259,967.79/138,327.70 - Step 6: Final answer
x = 188,792.70
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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.