Home / 90,910.30-136,179.55-74,103.21

Finding the Fourth Proportional to 90,910.30, 136,179.55 and 74,103.21

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Solution

The fourth proportional to 90,910.30, 136,179.55 and 74,103.21 is: 111,003.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,910.30 : 136,179.55 = 74,103.21 : x
  2. Step 2: Convert to fraction form
    90,910.30/136,179.55 = 74,103.21/x
  3. Step 3: Cross multiply
    90,910.30x = 136,179.55 × 74,103.21
  4. Step 4: Simplify right side
    90,910.30x = 10,091,341,791.36
  5. Step 5: Solve for x
    x = 10,091,341,791.36/90,910.30
  6. Step 6: Final answer
    x = 111,003.28

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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.