Finding the Fourth Proportional to 138,355.15, 207,532.76 and 106,811.26
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Solution
The fourth proportional to 138,355.15, 207,532.76 and 106,811.26 is: 160,216.92
Step by Step Solution
- Step 1: Write the proportion equation
138,355.15 : 207,532.76 = 106,811.26 : x - Step 2: Convert to fraction form
138,355.15/207,532.76 = 106,811.26/x - Step 3: Cross multiply
138,355.15x = 207,532.76 × 106,811.26 - Step 4: Simplify right side
138,355.15x = 22,166,835,586.88 - Step 5: Solve for x
x = 22,166,835,586.88/138,355.15 - Step 6: Final answer
x = 160,216.92
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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.