Home / 90,107.62-135,112.83-45,706.66

Finding the Fourth Proportional to 90,107.62, 135,112.83 and 45,706.66

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Solution

The fourth proportional to 90,107.62, 135,112.83 and 45,706.66 is: 68,535.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,107.62 : 135,112.83 = 45,706.66 : x
  2. Step 2: Convert to fraction form
    90,107.62/135,112.83 = 45,706.66/x
  3. Step 3: Cross multiply
    90,107.62x = 135,112.83 × 45,706.66
  4. Step 4: Simplify right side
    90,107.62x = 6,175,556,182.45
  5. Step 5: Solve for x
    x = 6,175,556,182.45/90,107.62
  6. Step 6: Final answer
    x = 68,535.34

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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.