Finding the Fourth Proportional to 171,989.10, 257,473.35 and 127,811.70
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Solution
The fourth proportional to 171,989.10, 257,473.35 and 127,811.70 is: 191,338.33
Step by Step Solution
- Step 1: Write the proportion equation
171,989.10 : 257,473.35 = 127,811.70 : x - Step 2: Convert to fraction form
171,989.10/257,473.35 = 127,811.70/x - Step 3: Cross multiply
171,989.10x = 257,473.35 × 127,811.70 - Step 4: Simplify right side
171,989.10x = 32,908,106,568.20 - Step 5: Solve for x
x = 32,908,106,568.20/171,989.10 - Step 6: Final answer
x = 191,338.33
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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.