Finding the Fourth Proportional to 138,178.71, 207,267.30 and 119,401.65
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Solution
The fourth proportional to 138,178.71, 207,267.30 and 119,401.65 is: 179,101.81
Step by Step Solution
- Step 1: Write the proportion equation
138,178.71 : 207,267.30 = 119,401.65 : x - Step 2: Convert to fraction form
138,178.71/207,267.30 = 119,401.65/x - Step 3: Cross multiply
138,178.71x = 207,267.30 × 119,401.65 - Step 4: Simplify right side
138,178.71x = 24,748,057,611.05 - Step 5: Solve for x
x = 24,748,057,611.05/138,178.71 - Step 6: Final answer
x = 179,101.81
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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.