Finding the Fourth Proportional to 122,009.07, 168,305.20 and 85,766.23
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Solution
The fourth proportional to 122,009.07, 168,305.20 and 85,766.23 is: 118,310.08
Step by Step Solution
- Step 1: Write the proportion equation
122,009.07 : 168,305.20 = 85,766.23 : x - Step 2: Convert to fraction form
122,009.07/168,305.20 = 85,766.23/x - Step 3: Cross multiply
122,009.07x = 168,305.20 × 85,766.23 - Step 4: Simplify right side
122,009.07x = 14,434,902,493.40 - Step 5: Solve for x
x = 14,434,902,493.40/122,009.07 - Step 6: Final answer
x = 118,310.08
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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.