Home / 128,956.56-193,435.92-40,206.48

Finding the Fourth Proportional to 128,956.56, 193,435.92 and 40,206.48

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Solution

The fourth proportional to 128,956.56, 193,435.92 and 40,206.48 is: 60,310.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,956.56 : 193,435.92 = 40,206.48 : x
  2. Step 2: Convert to fraction form
    128,956.56/193,435.92 = 40,206.48/x
  3. Step 3: Cross multiply
    128,956.56x = 193,435.92 × 40,206.48
  4. Step 4: Simplify right side
    128,956.56x = 7,777,377,448.76
  5. Step 5: Solve for x
    x = 7,777,377,448.76/128,956.56
  6. Step 6: Final answer
    x = 60,310.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.