Finding the Fourth Proportional to 121,285.26, 181,960.73 and 68,731.65
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Solution
The fourth proportional to 121,285.26, 181,960.73 and 68,731.65 is: 103,116.08
Step by Step Solution
- Step 1: Write the proportion equation
121,285.26 : 181,960.73 = 68,731.65 : x - Step 2: Convert to fraction form
121,285.26/181,960.73 = 68,731.65/x - Step 3: Cross multiply
121,285.26x = 181,960.73 × 68,731.65 - Step 4: Simplify right side
121,285.26x = 12,506,460,864.45 - Step 5: Solve for x
x = 12,506,460,864.45/121,285.26 - Step 6: Final answer
x = 103,116.08
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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.