Finding the Fourth Proportional to 138,914.14, 191,701.33 and 75,252.19
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Solution
The fourth proportional to 138,914.14, 191,701.33 and 75,252.19 is: 103,847.92
Step by Step Solution
- Step 1: Write the proportion equation
138,914.14 : 191,701.33 = 75,252.19 : x - Step 2: Convert to fraction form
138,914.14/191,701.33 = 75,252.19/x - Step 3: Cross multiply
138,914.14x = 191,701.33 × 75,252.19 - Step 4: Simplify right side
138,914.14x = 14,425,944,908.41 - Step 5: Solve for x
x = 14,425,944,908.41/138,914.14 - Step 6: Final answer
x = 103,847.92
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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.