Home / 190,972.78-263,443.60-129,722.12

Finding the Fourth Proportional to 190,972.78, 263,443.60 and 129,722.12

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Solution

The fourth proportional to 190,972.78, 263,443.60 and 129,722.12 is: 178,949.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,972.78 : 263,443.60 = 129,722.12 : x
  2. Step 2: Convert to fraction form
    190,972.78/263,443.60 = 129,722.12/x
  3. Step 3: Cross multiply
    190,972.78x = 263,443.60 × 129,722.12
  4. Step 4: Simplify right side
    190,972.78x = 34,174,462,125.28
  5. Step 5: Solve for x
    x = 34,174,462,125.28/190,972.78
  6. Step 6: Final answer
    x = 178,949.39

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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.