Finding the Fourth Proportional to 138,919.14, 191,708.22 and 75,257.19
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Solution
The fourth proportional to 138,919.14, 191,708.22 and 75,257.19 is: 103,854.82
Step by Step Solution
- Step 1: Write the proportion equation
138,919.14 : 191,708.22 = 75,257.19 : x - Step 2: Convert to fraction form
138,919.14/191,708.22 = 75,257.19/x - Step 3: Cross multiply
138,919.14x = 191,708.22 × 75,257.19 - Step 4: Simplify right side
138,919.14x = 14,427,421,937.10 - Step 5: Solve for x
x = 14,427,421,937.10/138,919.14 - Step 6: Final answer
x = 103,854.82
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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.