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Finding the Fourth Proportional to 158,609.20, 218,765.94 and 134,698

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Solution

The fourth proportional to 158,609.20, 218,765.94 and 134,698 is: 185,785.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,609.20 : 218,765.94 = 134,698 : x
  2. Step 2: Convert to fraction form
    158,609.20/218,765.94 = 134,698/x
  3. Step 3: Cross multiply
    158,609.20x = 218,765.94 × 134,698
  4. Step 4: Simplify right side
    158,609.20x = 29,467,334,586.12
  5. Step 5: Solve for x
    x = 29,467,334,586.12/158,609.20
  6. Step 6: Final answer
    x = 185,785.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.