Finding the Fourth Proportional to 171,387.90, 257,475.99 and 120,903.12
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Solution
The fourth proportional to 171,387.90, 257,475.99 and 120,903.12 is: 181,632.72
Step by Step Solution
- Step 1: Write the proportion equation
171,387.90 : 257,475.99 = 120,903.12 : x - Step 2: Convert to fraction form
171,387.90/257,475.99 = 120,903.12/x - Step 3: Cross multiply
171,387.90x = 257,475.99 × 120,903.12 - Step 4: Simplify right side
171,387.90x = 31,129,650,516.09 - Step 5: Solve for x
x = 31,129,650,516.09/171,387.90 - Step 6: Final answer
x = 181,632.72
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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.