Finding the Fourth Proportional to 171,431.12, 236,589.30 and 99,815.99
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Solution
The fourth proportional to 171,431.12, 236,589.30 and 99,815.99 is: 137,754.42
Step by Step Solution
- Step 1: Write the proportion equation
171,431.12 : 236,589.30 = 99,815.99 : x - Step 2: Convert to fraction form
171,431.12/236,589.30 = 99,815.99/x - Step 3: Cross multiply
171,431.12x = 236,589.30 × 99,815.99 - Step 4: Simplify right side
171,431.12x = 23,615,394,019.96 - Step 5: Solve for x
x = 23,615,394,019.96/171,431.12 - Step 6: Final answer
x = 137,754.42
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1.5x scale
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.