Finding the Fourth Proportional to 141,031.44, 194,620.05 and 77,368.68
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Solution
The fourth proportional to 141,031.44, 194,620.05 and 77,368.68 is: 106,766.95
Step by Step Solution
- Step 1: Write the proportion equation
141,031.44 : 194,620.05 = 77,368.68 : x - Step 2: Convert to fraction form
141,031.44/194,620.05 = 77,368.68/x - Step 3: Cross multiply
141,031.44x = 194,620.05 × 77,368.68 - Step 4: Simplify right side
141,031.44x = 15,057,496,370.03 - Step 5: Solve for x
x = 15,057,496,370.03/141,031.44 - Step 6: Final answer
x = 106,766.95
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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.