Finding the Fourth Proportional to 138,964.96, 208,459.74 and 39,126.02
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Solution
The fourth proportional to 138,964.96, 208,459.74 and 39,126.02 is: 58,692.49
Step by Step Solution
- Step 1: Write the proportion equation
138,964.96 : 208,459.74 = 39,126.02 : x - Step 2: Convert to fraction form
138,964.96/208,459.74 = 39,126.02/x - Step 3: Cross multiply
138,964.96x = 208,459.74 × 39,126.02 - Step 4: Simplify right side
138,964.96x = 8,156,199,956.43 - Step 5: Solve for x
x = 8,156,199,956.43/138,964.96 - Step 6: Final answer
x = 58,692.49
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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.