Finding the Fourth Proportional to 125,312.04, 172,939.86 and 68,728.68
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Solution
The fourth proportional to 125,312.04, 172,939.86 and 68,728.68 is: 94,850.65
Step by Step Solution
- Step 1: Write the proportion equation
125,312.04 : 172,939.86 = 68,728.68 : x - Step 2: Convert to fraction form
125,312.04/172,939.86 = 68,728.68/x - Step 3: Cross multiply
125,312.04x = 172,939.86 × 68,728.68 - Step 4: Simplify right side
125,312.04x = 11,885,928,297.18 - Step 5: Solve for x
x = 11,885,928,297.18/125,312.04 - Step 6: Final answer
x = 94,850.65
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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.