Finding the Fourth Proportional to 99,688.28, 149,594.67 and 66,431.68
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Solution
The fourth proportional to 99,688.28, 149,594.67 and 66,431.68 is: 99,689.00
Step by Step Solution
- Step 1: Write the proportion equation
99,688.28 : 149,594.67 = 66,431.68 : x - Step 2: Convert to fraction form
99,688.28/149,594.67 = 66,431.68/x - Step 3: Cross multiply
99,688.28x = 149,594.67 × 66,431.68 - Step 4: Simplify right side
99,688.28x = 9,937,825,247.15 - Step 5: Solve for x
x = 9,937,825,247.15/99,688.28 - Step 6: Final answer
x = 99,689.00
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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.