Home / 187,905.43-259,320.09-111,469.78

Finding the Fourth Proportional to 187,905.43, 259,320.09 and 111,469.78

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Solution

The fourth proportional to 187,905.43, 259,320.09 and 111,469.78 is: 153,834.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,905.43 : 259,320.09 = 111,469.78 : x
  2. Step 2: Convert to fraction form
    187,905.43/259,320.09 = 111,469.78/x
  3. Step 3: Cross multiply
    187,905.43x = 259,320.09 × 111,469.78
  4. Step 4: Simplify right side
    187,905.43x = 28,906,353,381.88
  5. Step 5: Solve for x
    x = 28,906,353,381.88/187,905.43
  6. Step 6: Final answer
    x = 153,834.58

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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.