Finding the Fourth Proportional to 120,305.12, 180,356.18 and 75,833.84
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Solution
The fourth proportional to 120,305.12, 180,356.18 and 75,833.84 is: 113,686.78
Step by Step Solution
- Step 1: Write the proportion equation
120,305.12 : 180,356.18 = 75,833.84 : x - Step 2: Convert to fraction form
120,305.12/180,356.18 = 75,833.84/x - Step 3: Cross multiply
120,305.12x = 180,356.18 × 75,833.84 - Step 4: Simplify right side
120,305.12x = 13,677,101,697.13 - Step 5: Solve for x
x = 13,677,101,697.13/120,305.12 - Step 6: Final answer
x = 113,686.78
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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.