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Finding the Fourth Proportional to 139,801.36, 192,968.04 and 95,115.28

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Solution

The fourth proportional to 139,801.36, 192,968.04 and 95,115.28 is: 131,287.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,801.36 : 192,968.04 = 95,115.28 : x
  2. Step 2: Convert to fraction form
    139,801.36/192,968.04 = 95,115.28/x
  3. Step 3: Cross multiply
    139,801.36x = 192,968.04 × 95,115.28
  4. Step 4: Simplify right side
    139,801.36x = 18,354,209,155.65
  5. Step 5: Solve for x
    x = 18,354,209,155.65/139,801.36
  6. Step 6: Final answer
    x = 131,287.77

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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.