Finding the Fourth Proportional to 120,291.62, 165,987.87 and 69,321.05
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Solution
The fourth proportional to 120,291.62, 165,987.87 and 69,321.05 is: 95,654.66
Step by Step Solution
- Step 1: Write the proportion equation
120,291.62 : 165,987.87 = 69,321.05 : x - Step 2: Convert to fraction form
120,291.62/165,987.87 = 69,321.05/x - Step 3: Cross multiply
120,291.62x = 165,987.87 × 69,321.05 - Step 4: Simplify right side
120,291.62x = 11,506,452,968.22 - Step 5: Solve for x
x = 11,506,452,968.22/120,291.62 - Step 6: Final answer
x = 95,654.66
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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.