Home / 139,710.38-192,771.14-91,383.12

Finding the Fourth Proportional to 139,710.38, 192,771.14 and 91,383.12

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Solution

The fourth proportional to 139,710.38, 192,771.14 and 91,383.12 is: 126,089.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,710.38 : 192,771.14 = 91,383.12 : x
  2. Step 2: Convert to fraction form
    139,710.38/192,771.14 = 91,383.12/x
  3. Step 3: Cross multiply
    139,710.38x = 192,771.14 × 91,383.12
  4. Step 4: Simplify right side
    139,710.38x = 17,616,027,762.24
  5. Step 5: Solve for x
    x = 17,616,027,762.24/139,710.38
  6. Step 6: Final answer
    x = 126,089.62

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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.