Finding the Fourth Proportional to 138,949.21, 208,418.95 and 58,935.79
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Solution
The fourth proportional to 138,949.21, 208,418.95 and 58,935.79 is: 88,401.62
Step by Step Solution
- Step 1: Write the proportion equation
138,949.21 : 208,418.95 = 58,935.79 : x - Step 2: Convert to fraction form
138,949.21/208,418.95 = 58,935.79/x - Step 3: Cross multiply
138,949.21x = 208,418.95 × 58,935.79 - Step 4: Simplify right side
138,949.21x = 12,283,335,469.22 - Step 5: Solve for x
x = 12,283,335,469.22/138,949.21 - Step 6: Final answer
x = 88,401.62
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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.