Home / 122,127.66-168,441.39-81,828.54

Finding the Fourth Proportional to 122,127.66, 168,441.39 and 81,828.54

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Solution

The fourth proportional to 122,127.66, 168,441.39 and 81,828.54 is: 112,859.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,127.66 : 168,441.39 = 81,828.54 : x
  2. Step 2: Convert to fraction form
    122,127.66/168,441.39 = 81,828.54/x
  3. Step 3: Cross multiply
    122,127.66x = 168,441.39 × 81,828.54
  4. Step 4: Simplify right side
    122,127.66x = 13,783,313,019.27
  5. Step 5: Solve for x
    x = 13,783,313,019.27/122,127.66
  6. Step 6: Final answer
    x = 112,859.88

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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.