Finding the Fourth Proportional to 137,239.11, 205,977.74 and 74,114.19
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Solution
The fourth proportional to 137,239.11, 205,977.74 and 74,114.19 is: 111,235.59
Step by Step Solution
- Step 1: Write the proportion equation
137,239.11 : 205,977.74 = 74,114.19 : x - Step 2: Convert to fraction form
137,239.11/205,977.74 = 74,114.19/x - Step 3: Cross multiply
137,239.11x = 205,977.74 × 74,114.19 - Step 4: Simplify right side
137,239.11x = 15,265,872,987.56 - Step 5: Solve for x
x = 15,265,872,987.56/137,239.11 - Step 6: Final answer
x = 111,235.59
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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.