Finding the Fourth Proportional to 140,787.13, 194,291.09 and 77,124.91
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Solution
The fourth proportional to 140,787.13, 194,291.09 and 77,124.91 is: 106,435.03
Step by Step Solution
- Step 1: Write the proportion equation
140,787.13 : 194,291.09 = 77,124.91 : x - Step 2: Convert to fraction form
140,787.13/194,291.09 = 77,124.91/x - Step 3: Cross multiply
140,787.13x = 194,291.09 × 77,124.91 - Step 4: Simplify right side
140,787.13x = 14,984,682,830.05 - Step 5: Solve for x
x = 14,984,682,830.05/140,787.13 - Step 6: Final answer
x = 106,435.03
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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.