Finding the Fourth Proportional to 167,382.18, 230,987.40 and 91,930.68
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Solution
The fourth proportional to 167,382.18, 230,987.40 and 91,930.68 is: 126,864.33
Step by Step Solution
- Step 1: Write the proportion equation
167,382.18 : 230,987.40 = 91,930.68 : x - Step 2: Convert to fraction form
167,382.18/230,987.40 = 91,930.68/x - Step 3: Cross multiply
167,382.18x = 230,987.40 × 91,930.68 - Step 4: Simplify right side
167,382.18x = 21,234,828,753.43 - Step 5: Solve for x
x = 21,234,828,753.43/167,382.18 - Step 6: Final answer
x = 126,864.33
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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.