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Finding the Fourth Proportional to 125,758.97, 188,638.41 and 73,131.54

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Solution

The fourth proportional to 125,758.97, 188,638.41 and 73,131.54 is: 109,697.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,758.97 : 188,638.41 = 73,131.54 : x
  2. Step 2: Convert to fraction form
    125,758.97/188,638.41 = 73,131.54/x
  3. Step 3: Cross multiply
    125,758.97x = 188,638.41 × 73,131.54
  4. Step 4: Simplify right side
    125,758.97x = 13,795,417,426.45
  5. Step 5: Solve for x
    x = 13,795,417,426.45/125,758.97
  6. Step 6: Final answer
    x = 109,697.29

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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.