Finding the Fourth Proportional to 120,489.39, 180,796.05 and 57,381.08
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Solution
The fourth proportional to 120,489.39, 180,796.05 and 57,381.08 is: 86,101.12
Step by Step Solution
- Step 1: Write the proportion equation
120,489.39 : 180,796.05 = 57,381.08 : x - Step 2: Convert to fraction form
120,489.39/180,796.05 = 57,381.08/x - Step 3: Cross multiply
120,489.39x = 180,796.05 × 57,381.08 - Step 4: Simplify right side
120,489.39x = 10,374,271,704.75 - Step 5: Solve for x
x = 10,374,271,704.75/120,489.39 - Step 6: Final answer
x = 86,101.12
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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.