Finding the Fourth Proportional to 138,911.44, 191,698.68 and 75,249.18
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Solution
The fourth proportional to 138,911.44, 191,698.68 and 75,249.18 is: 103,844.35
Step by Step Solution
- Step 1: Write the proportion equation
138,911.44 : 191,698.68 = 75,249.18 : x - Step 2: Convert to fraction form
138,911.44/191,698.68 = 75,249.18/x - Step 3: Cross multiply
138,911.44x = 191,698.68 × 75,249.18 - Step 4: Simplify right side
138,911.44x = 14,425,168,477.08 - Step 5: Solve for x
x = 14,425,168,477.08/138,911.44 - Step 6: Final answer
x = 103,844.35
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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.