Home / 90,106.26-135,214.97-45,764.83

Finding the Fourth Proportional to 90,106.26, 135,214.97 and 45,764.83

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Solution

The fourth proportional to 90,106.26, 135,214.97 and 45,764.83 is: 68,675.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,106.26 : 135,214.97 = 45,764.83 : x
  2. Step 2: Convert to fraction form
    90,106.26/135,214.97 = 45,764.83/x
  3. Step 3: Cross multiply
    90,106.26x = 135,214.97 × 45,764.83
  4. Step 4: Simplify right side
    90,106.26x = 6,188,090,115.51
  5. Step 5: Solve for x
    x = 6,188,090,115.51/90,106.26
  6. Step 6: Final answer
    x = 68,675.47

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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.