Finding the Fourth Proportional to 120,170.79, 180,158.99 and 73,407.87
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Solution
The fourth proportional to 120,170.79, 180,158.99 and 73,407.87 is: 110,052.43
Step by Step Solution
- Step 1: Write the proportion equation
120,170.79 : 180,158.99 = 73,407.87 : x - Step 2: Convert to fraction form
120,170.79/180,158.99 = 73,407.87/x - Step 3: Cross multiply
120,170.79x = 180,158.99 × 73,407.87 - Step 4: Simplify right side
120,170.79x = 13,225,087,350.21 - Step 5: Solve for x
x = 13,225,087,350.21/120,170.79 - Step 6: Final answer
x = 110,052.43
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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.