Finding the Fourth Proportional to 138,489.23, 207,758.45 and 47,299.67
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Solution
The fourth proportional to 138,489.23, 207,758.45 and 47,299.67 is: 70,957.90
Step by Step Solution
- Step 1: Write the proportion equation
138,489.23 : 207,758.45 = 47,299.67 : x - Step 2: Convert to fraction form
138,489.23/207,758.45 = 47,299.67/x - Step 3: Cross multiply
138,489.23x = 207,758.45 × 47,299.67 - Step 4: Simplify right side
138,489.23x = 9,826,905,153.09 - Step 5: Solve for x
x = 9,826,905,153.09/138,489.23 - Step 6: Final answer
x = 70,957.90
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1.5x scale
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.