Finding the Fourth Proportional to 134,739.38, 202,119.37 and 78,585.12
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Solution
The fourth proportional to 134,739.38, 202,119.37 and 78,585.12 is: 117,883.68
Step by Step Solution
- Step 1: Write the proportion equation
134,739.38 : 202,119.37 = 78,585.12 : x - Step 2: Convert to fraction form
134,739.38/202,119.37 = 78,585.12/x - Step 3: Cross multiply
134,739.38x = 202,119.37 × 78,585.12 - Step 4: Simplify right side
134,739.38x = 15,883,574,749.31 - Step 5: Solve for x
x = 15,883,574,749.31/134,739.38 - Step 6: Final answer
x = 117,883.68
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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.