Home / 90,191.89-135,335.83-50,751.78

Finding the Fourth Proportional to 90,191.89, 135,335.83 and 50,751.78

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Solution

The fourth proportional to 90,191.89, 135,335.83 and 50,751.78 is: 76,154.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,191.89 : 135,335.83 = 50,751.78 : x
  2. Step 2: Convert to fraction form
    90,191.89/135,335.83 = 50,751.78/x
  3. Step 3: Cross multiply
    90,191.89x = 135,335.83 × 50,751.78
  4. Step 4: Simplify right side
    90,191.89x = 6,868,534,270.28
  5. Step 5: Solve for x
    x = 6,868,534,270.28/90,191.89
  6. Step 6: Final answer
    x = 76,154.68

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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.