Home / 128,936.16-177,873.30-83,625.56

Finding the Fourth Proportional to 128,936.16, 177,873.30 and 83,625.56

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Solution

The fourth proportional to 128,936.16, 177,873.30 and 83,625.56 is: 115,365.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,936.16 : 177,873.30 = 83,625.56 : x
  2. Step 2: Convert to fraction form
    128,936.16/177,873.30 = 83,625.56/x
  3. Step 3: Cross multiply
    128,936.16x = 177,873.30 × 83,625.56
  4. Step 4: Simplify right side
    128,936.16x = 14,874,754,321.55
  5. Step 5: Solve for x
    x = 14,874,754,321.55/128,936.16
  6. Step 6: Final answer
    x = 115,365.27

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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.