Home / 136,209.90-187,969.10-75,786.33

Finding the Fourth Proportional to 136,209.90, 187,969.10 and 75,786.33

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Solution

The fourth proportional to 136,209.90, 187,969.10 and 75,786.33 is: 104,584.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,209.90 : 187,969.10 = 75,786.33 : x
  2. Step 2: Convert to fraction form
    136,209.90/187,969.10 = 75,786.33/x
  3. Step 3: Cross multiply
    136,209.90x = 187,969.10 × 75,786.33
  4. Step 4: Simplify right side
    136,209.90x = 14,245,487,863.47
  5. Step 5: Solve for x
    x = 14,245,487,863.47/136,209.90
  6. Step 6: Final answer
    x = 104,584.82

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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.