Home / 90,105.26-135,213.47-45,763.83

Finding the Fourth Proportional to 90,105.26, 135,213.47 and 45,763.83

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Solution

The fourth proportional to 90,105.26, 135,213.47 and 45,763.83 is: 68,673.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,105.26 : 135,213.47 = 45,763.83 : x
  2. Step 2: Convert to fraction form
    90,105.26/135,213.47 = 45,763.83/x
  3. Step 3: Cross multiply
    90,105.26x = 135,213.47 × 45,763.83
  4. Step 4: Simplify right side
    90,105.26x = 6,187,886,962.06
  5. Step 5: Solve for x
    x = 6,187,886,962.06/90,105.26
  6. Step 6: Final answer
    x = 68,673.98

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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.