Home / 135,428.28-203,066.40-92,781.86

Finding the Fourth Proportional to 135,428.28, 203,066.40 and 92,781.86

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Solution

The fourth proportional to 135,428.28, 203,066.40 and 92,781.86 is: 139,120.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,428.28 : 203,066.40 = 92,781.86 : x
  2. Step 2: Convert to fraction form
    135,428.28/203,066.40 = 92,781.86/x
  3. Step 3: Cross multiply
    135,428.28x = 203,066.40 × 92,781.86
  4. Step 4: Simplify right side
    135,428.28x = 18,840,878,295.50
  5. Step 5: Solve for x
    x = 18,840,878,295.50/135,428.28
  6. Step 6: Final answer
    x = 139,120.71

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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.