Finding the Fourth Proportional to 140,002.56, 193,201.02 and 76,338.99
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Solution
The fourth proportional to 140,002.56, 193,201.02 and 76,338.99 is: 105,346.44
Step by Step Solution
- Step 1: Write the proportion equation
140,002.56 : 193,201.02 = 76,338.99 : x - Step 2: Convert to fraction form
140,002.56/193,201.02 = 76,338.99/x - Step 3: Cross multiply
140,002.56x = 193,201.02 × 76,338.99 - Step 4: Simplify right side
140,002.56x = 14,748,770,733.77 - Step 5: Solve for x
x = 14,748,770,733.77/140,002.56 - Step 6: Final answer
x = 105,346.44
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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.