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Finding the Fourth Proportional to 115,103.58, 172,610.01 and 55,921.74

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Solution

The fourth proportional to 115,103.58, 172,610.01 and 55,921.74 is: 83,860.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,103.58 : 172,610.01 = 55,921.74 : x
  2. Step 2: Convert to fraction form
    115,103.58/172,610.01 = 55,921.74/x
  3. Step 3: Cross multiply
    115,103.58x = 172,610.01 × 55,921.74
  4. Step 4: Simplify right side
    115,103.58x = 9,652,652,100.62
  5. Step 5: Solve for x
    x = 9,652,652,100.62/115,103.58
  6. Step 6: Final answer
    x = 83,860.57

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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.