Finding the Fourth Proportional to 138,692.68, 207,958.74 and 54,354.28
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Solution
The fourth proportional to 138,692.68, 207,958.74 and 54,354.28 is: 81,499.96
Step by Step Solution
- Step 1: Write the proportion equation
138,692.68 : 207,958.74 = 54,354.28 : x - Step 2: Convert to fraction form
138,692.68/207,958.74 = 54,354.28/x - Step 3: Cross multiply
138,692.68x = 207,958.74 × 54,354.28 - Step 4: Simplify right side
138,692.68x = 11,303,447,582.41 - Step 5: Solve for x
x = 11,303,447,582.41/138,692.68 - Step 6: Final answer
x = 81,499.96
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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.