Finding the Fourth Proportional to 130,351.68, 179,787.41 and 87,379.65
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Solution
The fourth proportional to 130,351.68, 179,787.41 and 87,379.65 is: 120,518.28
Step by Step Solution
- Step 1: Write the proportion equation
130,351.68 : 179,787.41 = 87,379.65 : x - Step 2: Convert to fraction form
130,351.68/179,787.41 = 87,379.65/x - Step 3: Cross multiply
130,351.68x = 179,787.41 × 87,379.65 - Step 4: Simplify right side
130,351.68x = 15,709,760,523.31 - Step 5: Solve for x
x = 15,709,760,523.31/130,351.68 - Step 6: Final answer
x = 120,518.28
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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.