Home / 111,334.10-166,709.55-81,590.90

Finding the Fourth Proportional to 111,334.10, 166,709.55 and 81,590.90

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Solution

The fourth proportional to 111,334.10, 166,709.55 and 81,590.90 is: 122,172.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,334.10 : 166,709.55 = 81,590.90 : x
  2. Step 2: Convert to fraction form
    111,334.10/166,709.55 = 81,590.90/x
  3. Step 3: Cross multiply
    111,334.10x = 166,709.55 × 81,590.90
  4. Step 4: Simplify right side
    111,334.10x = 13,601,982,223.10
  5. Step 5: Solve for x
    x = 13,601,982,223.10/111,334.10
  6. Step 6: Final answer
    x = 122,172.65

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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.