Finding the Fourth Proportional to 120,131.99, 165,773.41 and 66,417.65
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Solution
The fourth proportional to 120,131.99, 165,773.41 and 66,417.65 is: 91,651.52
Step by Step Solution
- Step 1: Write the proportion equation
120,131.99 : 165,773.41 = 66,417.65 : x - Step 2: Convert to fraction form
120,131.99/165,773.41 = 66,417.65/x - Step 3: Cross multiply
120,131.99x = 165,773.41 × 66,417.65 - Step 4: Simplify right side
120,131.99x = 11,010,279,329.78 - Step 5: Solve for x
x = 11,010,279,329.78/120,131.99 - Step 6: Final answer
x = 91,651.52
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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.