Finding the Fourth Proportional to 140,178.12, 193,440.36 and 76,515.88
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Solution
The fourth proportional to 140,178.12, 193,440.36 and 76,515.88 is: 105,588.94
Step by Step Solution
- Step 1: Write the proportion equation
140,178.12 : 193,440.36 = 76,515.88 : x - Step 2: Convert to fraction form
140,178.12/193,440.36 = 76,515.88/x - Step 3: Cross multiply
140,178.12x = 193,440.36 × 76,515.88 - Step 4: Simplify right side
140,178.12x = 14,801,259,372.92 - Step 5: Solve for x
x = 14,801,259,372.92/140,178.12 - Step 6: Final answer
x = 105,588.94
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1.5x scale
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.