Finding the Fourth Proportional to 138,742.99, 191,465.33 and 75,080.79
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Solution
The fourth proportional to 138,742.99, 191,465.33 and 75,080.79 is: 103,611.49
Step by Step Solution
- Step 1: Write the proportion equation
138,742.99 : 191,465.33 = 75,080.79 : x - Step 2: Convert to fraction form
138,742.99/191,465.33 = 75,080.79/x - Step 3: Cross multiply
138,742.99x = 191,465.33 × 75,080.79 - Step 4: Simplify right side
138,742.99x = 14,375,368,046.31 - Step 5: Solve for x
x = 14,375,368,046.31/138,742.99 - Step 6: Final answer
x = 103,611.49
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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.