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Finding the Fourth Proportional to 171,728.80, 236,767.96 and 122,728.97

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Solution

The fourth proportional to 171,728.80, 236,767.96 and 122,728.97 is: 169,210.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,728.80 : 236,767.96 = 122,728.97 : x
  2. Step 2: Convert to fraction form
    171,728.80/236,767.96 = 122,728.97/x
  3. Step 3: Cross multiply
    171,728.80x = 236,767.96 × 122,728.97
  4. Step 4: Simplify right side
    171,728.80x = 29,058,287,859.80
  5. Step 5: Solve for x
    x = 29,058,287,859.80/171,728.80
  6. Step 6: Final answer
    x = 169,210.34

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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.