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Finding the Fourth Proportional to 139,572.33, 192,609.28 and 75,911.19

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Solution

The fourth proportional to 139,572.33, 192,609.28 and 75,911.19 is: 104,757.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,572.33 : 192,609.28 = 75,911.19 : x
  2. Step 2: Convert to fraction form
    139,572.33/192,609.28 = 75,911.19/x
  3. Step 3: Cross multiply
    139,572.33x = 192,609.28 × 75,911.19
  4. Step 4: Simplify right side
    139,572.33x = 14,621,198,595.45
  5. Step 5: Solve for x
    x = 14,621,198,595.45/139,572.33
  6. Step 6: Final answer
    x = 104,757.15

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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.