Finding the Fourth Proportional to 181,555.08, 250,370.10 and 121,128.18
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Solution
The fourth proportional to 181,555.08, 250,370.10 and 121,128.18 is: 167,039.53
Step by Step Solution
- Step 1: Write the proportion equation
181,555.08 : 250,370.10 = 121,128.18 : x - Step 2: Convert to fraction form
181,555.08/250,370.10 = 121,128.18/x - Step 3: Cross multiply
181,555.08x = 250,370.10 × 121,128.18 - Step 4: Simplify right side
181,555.08x = 30,326,874,539.42 - Step 5: Solve for x
x = 30,326,874,539.42/181,555.08 - Step 6: Final answer
x = 167,039.53
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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.