Finding the Fourth Proportional to 138,311.02, 190,872.99 and 84,595.06
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Solution
The fourth proportional to 138,311.02, 190,872.99 and 84,595.06 is: 116,743.50
Step by Step Solution
- Step 1: Write the proportion equation
138,311.02 : 190,872.99 = 84,595.06 : x - Step 2: Convert to fraction form
138,311.02/190,872.99 = 84,595.06/x - Step 3: Cross multiply
138,311.02x = 190,872.99 × 84,595.06 - Step 4: Simplify right side
138,311.02x = 16,146,912,041.43 - Step 5: Solve for x
x = 16,146,912,041.43/138,311.02 - Step 6: Final answer
x = 116,743.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.