Finding the Fourth Proportional to 138,244.23, 207,034.20 and 78,899.99
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Solution
The fourth proportional to 138,244.23, 207,034.20 and 78,899.99 is: 118,160.41
Step by Step Solution
- Step 1: Write the proportion equation
138,244.23 : 207,034.20 = 78,899.99 : x - Step 2: Convert to fraction form
138,244.23/207,034.20 = 78,899.99/x - Step 3: Cross multiply
138,244.23x = 207,034.20 × 78,899.99 - Step 4: Simplify right side
138,244.23x = 16,334,995,274.49 - Step 5: Solve for x
x = 16,334,995,274.49/138,244.23 - Step 6: Final answer
x = 118,160.41
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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.