Home / 178,785.38-268,173.92-90,015.05

Finding the Fourth Proportional to 178,785.38, 268,173.92 and 90,015.05

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Solution

The fourth proportional to 178,785.38, 268,173.92 and 90,015.05 is: 135,020.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,785.38 : 268,173.92 = 90,015.05 : x
  2. Step 2: Convert to fraction form
    178,785.38/268,173.92 = 90,015.05/x
  3. Step 3: Cross multiply
    178,785.38x = 268,173.92 × 90,015.05
  4. Step 4: Simplify right side
    178,785.38x = 24,139,689,712.97
  5. Step 5: Solve for x
    x = 24,139,689,712.97/178,785.38
  6. Step 6: Final answer
    x = 135,020.49

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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.