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Finding the Fourth Proportional to 134,682.60, 202,242.60 and 90,505.20

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Solution

The fourth proportional to 134,682.60, 202,242.60 and 90,505.20 is: 135,904.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,682.60 : 202,242.60 = 90,505.20 : x
  2. Step 2: Convert to fraction form
    134,682.60/202,242.60 = 90,505.20/x
  3. Step 3: Cross multiply
    134,682.60x = 202,242.60 × 90,505.20
  4. Step 4: Simplify right side
    134,682.60x = 18,304,006,961.52
  5. Step 5: Solve for x
    x = 18,304,006,961.52/134,682.60
  6. Step 6: Final answer
    x = 135,904.76

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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.