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Finding the Fourth Proportional to 125,638.48, 188,383.88 and 50,761

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Solution

The fourth proportional to 125,638.48, 188,383.88 and 50,761 is: 76,111.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,638.48 : 188,383.88 = 50,761 : x
  2. Step 2: Convert to fraction form
    125,638.48/188,383.88 = 50,761/x
  3. Step 3: Cross multiply
    125,638.48x = 188,383.88 × 50,761
  4. Step 4: Simplify right side
    125,638.48x = 9,562,554,132.68
  5. Step 5: Solve for x
    x = 9,562,554,132.68/125,638.48
  6. Step 6: Final answer
    x = 76,111.67

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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.