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Finding the Fourth Proportional to 139,497.03, 192,507.98 and 75,834.90

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Solution

The fourth proportional to 139,497.03, 192,507.98 and 75,834.90 is: 104,653.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,497.03 : 192,507.98 = 75,834.90 : x
  2. Step 2: Convert to fraction form
    139,497.03/192,507.98 = 75,834.90/x
  3. Step 3: Cross multiply
    139,497.03x = 192,507.98 × 75,834.90
  4. Step 4: Simplify right side
    139,497.03x = 14,598,823,033.33
  5. Step 5: Solve for x
    x = 14,598,823,033.33/139,497.03
  6. Step 6: Final answer
    x = 104,653.29

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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.