Finding the Fourth Proportional to 120,076.14, 165,694.19 and 69,075.30
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Solution
The fourth proportional to 120,076.14, 165,694.19 and 69,075.30 is: 95,317.65
Step by Step Solution
- Step 1: Write the proportion equation
120,076.14 : 165,694.19 = 69,075.30 : x - Step 2: Convert to fraction form
120,076.14/165,694.19 = 69,075.30/x - Step 3: Cross multiply
120,076.14x = 165,694.19 × 69,075.30 - Step 4: Simplify right side
120,076.14x = 11,445,375,537.13 - Step 5: Solve for x
x = 11,445,375,537.13/120,076.14 - Step 6: Final answer
x = 95,317.65
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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.