Finding the Fourth Proportional to 138,964.65, 208,459.28 and 39,125.70
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Solution
The fourth proportional to 138,964.65, 208,459.28 and 39,125.70 is: 58,692.02
Step by Step Solution
- Step 1: Write the proportion equation
138,964.65 : 208,459.28 = 39,125.70 : x - Step 2: Convert to fraction form
138,964.65/208,459.28 = 39,125.70/x - Step 3: Cross multiply
138,964.65x = 208,459.28 × 39,125.70 - Step 4: Simplify right side
138,964.65x = 8,156,116,118.71 - Step 5: Solve for x
x = 8,156,116,118.71/138,964.65 - Step 6: Final answer
x = 58,692.02
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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.