Finding the Fourth Proportional to 122,023.42, 168,305.52 and 111,984.28
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Solution
The fourth proportional to 122,023.42, 168,305.52 and 111,984.28 is: 154,458.65
Step by Step Solution
- Step 1: Write the proportion equation
122,023.42 : 168,305.52 = 111,984.28 : x - Step 2: Convert to fraction form
122,023.42/168,305.52 = 111,984.28/x - Step 3: Cross multiply
122,023.42x = 168,305.52 × 111,984.28 - Step 4: Simplify right side
122,023.42x = 18,847,572,477.23 - Step 5: Solve for x
x = 18,847,572,477.23/122,023.42 - Step 6: Final answer
x = 154,458.65
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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.