Home / 136,469.16-188,327.82-79,119.60

Finding the Fourth Proportional to 136,469.16, 188,327.82 and 79,119.60

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Solution

The fourth proportional to 136,469.16, 188,327.82 and 79,119.60 is: 109,185.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,469.16 : 188,327.82 = 79,119.60 : x
  2. Step 2: Convert to fraction form
    136,469.16/188,327.82 = 79,119.60/x
  3. Step 3: Cross multiply
    136,469.16x = 188,327.82 × 79,119.60
  4. Step 4: Simplify right side
    136,469.16x = 14,900,421,787.27
  5. Step 5: Solve for x
    x = 14,900,421,787.27/136,469.16
  6. Step 6: Final answer
    x = 109,185.27

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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.