Finding the Fourth Proportional to 130,761.46, 180,383.88 and 85,465.99
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Solution
The fourth proportional to 130,761.46, 180,383.88 and 85,465.99 is: 117,899.32
Step by Step Solution
- Step 1: Write the proportion equation
130,761.46 : 180,383.88 = 85,465.99 : x - Step 2: Convert to fraction form
130,761.46/180,383.88 = 85,465.99/x - Step 3: Cross multiply
130,761.46x = 180,383.88 × 85,465.99 - Step 4: Simplify right side
130,761.46x = 15,416,686,884.24 - Step 5: Solve for x
x = 15,416,686,884.24/130,761.46 - Step 6: Final answer
x = 117,899.32
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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.