Home / 109,725.56-164,391.54-103,820.68

Finding the Fourth Proportional to 109,725.56, 164,391.54 and 103,820.68

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Solution

The fourth proportional to 109,725.56, 164,391.54 and 103,820.68 is: 155,544.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,725.56 : 164,391.54 = 103,820.68 : x
  2. Step 2: Convert to fraction form
    109,725.56/164,391.54 = 103,820.68/x
  3. Step 3: Cross multiply
    109,725.56x = 164,391.54 × 103,820.68
  4. Step 4: Simplify right side
    109,725.56x = 17,067,241,469.05
  5. Step 5: Solve for x
    x = 17,067,241,469.05/109,725.56
  6. Step 6: Final answer
    x = 155,544.81

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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.