Home / 189,983.68-262,178.56-105,103.76

Finding the Fourth Proportional to 189,983.68, 262,178.56 and 105,103.76

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Solution

The fourth proportional to 189,983.68, 262,178.56 and 105,103.76 is: 145,043.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,983.68 : 262,178.56 = 105,103.76 : x
  2. Step 2: Convert to fraction form
    189,983.68/262,178.56 = 105,103.76/x
  3. Step 3: Cross multiply
    189,983.68x = 262,178.56 × 105,103.76
  4. Step 4: Simplify right side
    189,983.68x = 27,555,952,447.39
  5. Step 5: Solve for x
    x = 27,555,952,447.39/189,983.68
  6. Step 6: Final answer
    x = 145,043.79

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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.