Home / 111,377.10-166,774.05-81,633.90

Finding the Fourth Proportional to 111,377.10, 166,774.05 and 81,633.90

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Solution

The fourth proportional to 111,377.10, 166,774.05 and 81,633.90 is: 122,237.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,377.10 : 166,774.05 = 81,633.90 : x
  2. Step 2: Convert to fraction form
    111,377.10/166,774.05 = 81,633.90/x
  3. Step 3: Cross multiply
    111,377.10x = 166,774.05 × 81,633.90
  4. Step 4: Simplify right side
    111,377.10x = 13,614,416,120.30
  5. Step 5: Solve for x
    x = 13,614,416,120.30/111,377.10
  6. Step 6: Final answer
    x = 122,237.12

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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.