Finding the Fourth Proportional to 140,555.29, 193,970.89 and 76,893.09
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Solution
The fourth proportional to 140,555.29, 193,970.89 and 76,893.09 is: 106,114.98
Step by Step Solution
- Step 1: Write the proportion equation
140,555.29 : 193,970.89 = 76,893.09 : x - Step 2: Convert to fraction form
140,555.29/193,970.89 = 76,893.09/x - Step 3: Cross multiply
140,555.29x = 193,970.89 × 76,893.09 - Step 4: Simplify right side
140,555.29x = 14,915,021,102.15 - Step 5: Solve for x
x = 14,915,021,102.15/140,555.29 - Step 6: Final answer
x = 106,114.98
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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.