Finding the Fourth Proportional to 140,131.05, 193,381.35 and 76,469.91
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Solution
The fourth proportional to 140,131.05, 193,381.35 and 76,469.91 is: 105,528.75
Step by Step Solution
- Step 1: Write the proportion equation
140,131.05 : 193,381.35 = 76,469.91 : x - Step 2: Convert to fraction form
140,131.05/193,381.35 = 76,469.91/x - Step 3: Cross multiply
140,131.05x = 193,381.35 × 76,469.91 - Step 4: Simplify right side
140,131.05x = 14,787,854,430.18 - Step 5: Solve for x
x = 14,787,854,430.18/140,131.05 - Step 6: Final answer
x = 105,528.75
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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.