Finding the Fourth Proportional to 139,358.35, 192,394.32 and 91,750.09
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Solution
The fourth proportional to 139,358.35, 192,394.32 and 91,750.09 is: 126,667.66
Step by Step Solution
- Step 1: Write the proportion equation
139,358.35 : 192,394.32 = 91,750.09 : x - Step 2: Convert to fraction form
139,358.35/192,394.32 = 91,750.09/x - Step 3: Cross multiply
139,358.35x = 192,394.32 × 91,750.09 - Step 4: Simplify right side
139,358.35x = 17,652,196,175.49 - Step 5: Solve for x
x = 17,652,196,175.49/139,358.35 - Step 6: Final answer
x = 126,667.66
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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.