Home / 128,326.45-177,007.06-82,313.27

Finding the Fourth Proportional to 128,326.45, 177,007.06 and 82,313.27

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Solution

The fourth proportional to 128,326.45, 177,007.06 and 82,313.27 is: 113,538.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,326.45 : 177,007.06 = 82,313.27 : x
  2. Step 2: Convert to fraction form
    128,326.45/177,007.06 = 82,313.27/x
  3. Step 3: Cross multiply
    128,326.45x = 177,007.06 × 82,313.27
  4. Step 4: Simplify right side
    128,326.45x = 14,570,029,921.69
  5. Step 5: Solve for x
    x = 14,570,029,921.69/128,326.45
  6. Step 6: Final answer
    x = 113,538.79

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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.