Finding the Fourth Proportional to 150,555.11, 207,769.86 and 85,138.70
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Solution
The fourth proportional to 150,555.11, 207,769.86 and 85,138.70 is: 117,493.56
Step by Step Solution
- Step 1: Write the proportion equation
150,555.11 : 207,769.86 = 85,138.70 : x - Step 2: Convert to fraction form
150,555.11/207,769.86 = 85,138.70/x - Step 3: Cross multiply
150,555.11x = 207,769.86 × 85,138.70 - Step 4: Simplify right side
150,555.11x = 17,689,254,740.73 - Step 5: Solve for x
x = 17,689,254,740.73/150,555.11 - Step 6: Final answer
x = 117,493.56
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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.