Finding the Fourth Proportional to 173,866.26, 239,918.85 and 138,142.74
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Solution
The fourth proportional to 173,866.26, 239,918.85 and 138,142.74 is: 190,623.80
Step by Step Solution
- Step 1: Write the proportion equation
173,866.26 : 239,918.85 = 138,142.74 : x - Step 2: Convert to fraction form
173,866.26/239,918.85 = 138,142.74/x - Step 3: Cross multiply
173,866.26x = 239,918.85 × 138,142.74 - Step 4: Simplify right side
173,866.26x = 33,143,047,316.65 - Step 5: Solve for x
x = 33,143,047,316.65/173,866.26 - Step 6: Final answer
x = 190,623.80
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1.5x scale
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.