Finding the Fourth Proportional to 120,005.12, 180,027.12 and 36,899.12
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Solution
The fourth proportional to 120,005.12, 180,027.12 and 36,899.12 is: 55,354.66
Step by Step Solution
- Step 1: Write the proportion equation
120,005.12 : 180,027.12 = 36,899.12 : x - Step 2: Convert to fraction form
120,005.12/180,027.12 = 36,899.12/x - Step 3: Cross multiply
120,005.12x = 180,027.12 × 36,899.12 - Step 4: Simplify right side
120,005.12x = 6,642,842,304.13 - Step 5: Solve for x
x = 6,642,842,304.13/120,005.12 - Step 6: Final answer
x = 55,354.66
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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.