Finding the Fourth Proportional to 154,742.12, 213,533.44 and 85,825.08
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Solution
The fourth proportional to 154,742.12, 213,533.44 and 85,825.08 is: 118,432.68
Step by Step Solution
- Step 1: Write the proportion equation
154,742.12 : 213,533.44 = 85,825.08 : x - Step 2: Convert to fraction form
154,742.12/213,533.44 = 85,825.08/x - Step 3: Cross multiply
154,742.12x = 213,533.44 × 85,825.08 - Step 4: Simplify right side
154,742.12x = 18,326,524,570.68 - Step 5: Solve for x
x = 18,326,524,570.68/154,742.12 - Step 6: Final answer
x = 118,432.68
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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.