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Finding the Fourth Proportional to 135,792.10, 203,609.22 and 90,864.79

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Solution

The fourth proportional to 135,792.10, 203,609.22 and 90,864.79 is: 136,244.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,792.10 : 203,609.22 = 90,864.79 : x
  2. Step 2: Convert to fraction form
    135,792.10/203,609.22 = 90,864.79/x
  3. Step 3: Cross multiply
    135,792.10x = 203,609.22 × 90,864.79
  4. Step 4: Simplify right side
    135,792.10x = 18,500,909,017.36
  5. Step 5: Solve for x
    x = 18,500,909,017.36/135,792.10
  6. Step 6: Final answer
    x = 136,244.37

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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.