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Finding the Fourth Proportional to 139,314.20, 192,253.60 and 75,652

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Solution

The fourth proportional to 139,314.20, 192,253.60 and 75,652 is: 104,399.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,314.20 : 192,253.60 = 75,652 : x
  2. Step 2: Convert to fraction form
    139,314.20/192,253.60 = 75,652/x
  3. Step 3: Cross multiply
    139,314.20x = 192,253.60 × 75,652
  4. Step 4: Simplify right side
    139,314.20x = 14,544,369,347.20
  5. Step 5: Solve for x
    x = 14,544,369,347.20/139,314.20
  6. Step 6: Final answer
    x = 104,399.76

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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.