Home / 111,171.09-166,581.90-85,932.39

Finding the Fourth Proportional to 111,171.09, 166,581.90 and 85,932.39

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Solution

The fourth proportional to 111,171.09, 166,581.90 and 85,932.39 is: 128,763.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,171.09 : 166,581.90 = 85,932.39 : x
  2. Step 2: Convert to fraction form
    111,171.09/166,581.90 = 85,932.39/x
  3. Step 3: Cross multiply
    111,171.09x = 166,581.90 × 85,932.39
  4. Step 4: Simplify right side
    111,171.09x = 14,314,780,797.74
  5. Step 5: Solve for x
    x = 14,314,780,797.74/111,171.09
  6. Step 6: Final answer
    x = 128,763.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.