Home / 191,138.11-263,777.36-105,103.64

Finding the Fourth Proportional to 191,138.11, 263,777.36 and 105,103.64

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Solution

The fourth proportional to 191,138.11, 263,777.36 and 105,103.64 is: 145,046.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,138.11 : 263,777.36 = 105,103.64 : x
  2. Step 2: Convert to fraction form
    191,138.11/263,777.36 = 105,103.64/x
  3. Step 3: Cross multiply
    191,138.11x = 263,777.36 × 105,103.64
  4. Step 4: Simplify right side
    191,138.11x = 27,723,960,685.59
  5. Step 5: Solve for x
    x = 27,723,960,685.59/191,138.11
  6. Step 6: Final answer
    x = 145,046.74

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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.