Home / 111,949.10-167,923.65-86,579.90

Finding the Fourth Proportional to 111,949.10, 167,923.65 and 86,579.90

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Solution

The fourth proportional to 111,949.10, 167,923.65 and 86,579.90 is: 129,869.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,949.10 : 167,923.65 = 86,579.90 : x
  2. Step 2: Convert to fraction form
    111,949.10/167,923.65 = 86,579.90/x
  3. Step 3: Cross multiply
    111,949.10x = 167,923.65 × 86,579.90
  4. Step 4: Simplify right side
    111,949.10x = 14,538,812,824.64
  5. Step 5: Solve for x
    x = 14,538,812,824.64/111,949.10
  6. Step 6: Final answer
    x = 129,869.85

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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.