Home / 139,327.56-192,272.76-75,665.28

Finding the Fourth Proportional to 139,327.56, 192,272.76 and 75,665.28

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Solution

The fourth proportional to 139,327.56, 192,272.76 and 75,665.28 is: 104,418.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,327.56 : 192,272.76 = 75,665.28 : x
  2. Step 2: Convert to fraction form
    139,327.56/192,272.76 = 75,665.28/x
  3. Step 3: Cross multiply
    139,327.56x = 192,272.76 × 75,665.28
  4. Step 4: Simplify right side
    139,327.56x = 14,548,372,221.77
  5. Step 5: Solve for x
    x = 14,548,372,221.77/139,327.56
  6. Step 6: Final answer
    x = 104,418.48

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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.