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Finding the Fourth Proportional to 139,265.45, 192,190.28 and 75,607.41

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Solution

The fourth proportional to 139,265.45, 192,190.28 and 75,607.41 is: 104,340.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,265.45 : 192,190.28 = 75,607.41 : x
  2. Step 2: Convert to fraction form
    139,265.45/192,190.28 = 75,607.41/x
  3. Step 3: Cross multiply
    139,265.45x = 192,190.28 × 75,607.41
  4. Step 4: Simplify right side
    139,265.45x = 14,531,008,919.94
  5. Step 5: Solve for x
    x = 14,531,008,919.94/139,265.45
  6. Step 6: Final answer
    x = 104,340.38

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1.5x scale

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.