Finding the Fourth Proportional to 138,803.34, 191,549.03 and 75,140.99
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Solution
The fourth proportional to 138,803.34, 191,549.03 and 75,140.99 is: 103,694.78
Step by Step Solution
- Step 1: Write the proportion equation
138,803.34 : 191,549.03 = 75,140.99 : x - Step 2: Convert to fraction form
138,803.34/191,549.03 = 75,140.99/x - Step 3: Cross multiply
138,803.34x = 191,549.03 × 75,140.99 - Step 4: Simplify right side
138,803.34x = 14,393,182,414.29 - Step 5: Solve for x
x = 14,393,182,414.29/138,803.34 - Step 6: Final answer
x = 103,694.78
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.