Finding the Fourth Proportional to 149,313.64, 206,051.06 and 81,330.40
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Solution
The fourth proportional to 149,313.64, 206,051.06 and 81,330.40 is: 112,234.99
Step by Step Solution
- Step 1: Write the proportion equation
149,313.64 : 206,051.06 = 81,330.40 : x - Step 2: Convert to fraction form
149,313.64/206,051.06 = 81,330.40/x - Step 3: Cross multiply
149,313.64x = 206,051.06 × 81,330.40 - Step 4: Simplify right side
149,313.64x = 16,758,215,130.22 - Step 5: Solve for x
x = 16,758,215,130.22/149,313.64 - Step 6: Final answer
x = 112,234.99
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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.