Finding the Fourth Proportional to 110,438.80, 165,658.20 and 76,613.20
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Solution
The fourth proportional to 110,438.80, 165,658.20 and 76,613.20 is: 114,919.80
Step by Step Solution
- Step 1: Write the proportion equation
110,438.80 : 165,658.20 = 76,613.20 : x - Step 2: Convert to fraction form
110,438.80/165,658.20 = 76,613.20/x - Step 3: Cross multiply
110,438.80x = 165,658.20 × 76,613.20 - Step 4: Simplify right side
110,438.80x = 12,691,604,808.24 - Step 5: Solve for x
x = 12,691,604,808.24/110,438.80 - Step 6: Final answer
x = 114,919.80
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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.