Finding the Fourth Proportional to 180,718.17, 270,709.11 and 85,660.23
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Solution
The fourth proportional to 180,718.17, 270,709.11 and 85,660.23 is: 128,315.84
Step by Step Solution
- Step 1: Write the proportion equation
180,718.17 : 270,709.11 = 85,660.23 : x - Step 2: Convert to fraction form
180,718.17/270,709.11 = 85,660.23/x - Step 3: Cross multiply
180,718.17x = 270,709.11 × 85,660.23 - Step 4: Simplify right side
180,718.17x = 23,189,004,625.70 - Step 5: Solve for x
x = 23,189,004,625.70/180,718.17 - Step 6: Final answer
x = 128,315.84
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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.