Finding the Fourth Proportional to 138,202.98, 207,303.77 and 53,971.70
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Solution
The fourth proportional to 138,202.98, 207,303.77 and 53,971.70 is: 80,957.27
Step by Step Solution
- Step 1: Write the proportion equation
138,202.98 : 207,303.77 = 53,971.70 : x - Step 2: Convert to fraction form
138,202.98/207,303.77 = 53,971.70/x - Step 3: Cross multiply
138,202.98x = 207,303.77 × 53,971.70 - Step 4: Simplify right side
138,202.98x = 11,188,535,576.93 - Step 5: Solve for x
x = 11,188,535,576.93/138,202.98 - Step 6: Final answer
x = 80,957.27
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.