Finding the Fourth Proportional to 130,745.91, 180,423.68 and 72,599.03
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Solution
The fourth proportional to 130,745.91, 180,423.68 and 72,599.03 is: 100,183.50
Step by Step Solution
- Step 1: Write the proportion equation
130,745.91 : 180,423.68 = 72,599.03 : x - Step 2: Convert to fraction form
130,745.91/180,423.68 = 72,599.03/x - Step 3: Cross multiply
130,745.91x = 180,423.68 × 72,599.03 - Step 4: Simplify right side
130,745.91x = 13,098,582,891.92 - Step 5: Solve for x
x = 13,098,582,891.92/130,745.91 - Step 6: Final answer
x = 100,183.50
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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.