Home / 138,944.68-191,743.83-75,282.48

Finding the Fourth Proportional to 138,944.68, 191,743.83 and 75,282.48

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Solution

The fourth proportional to 138,944.68, 191,743.83 and 75,282.48 is: 103,889.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,944.68 : 191,743.83 = 75,282.48 : x
  2. Step 2: Convert to fraction form
    138,944.68/191,743.83 = 75,282.48/x
  3. Step 3: Cross multiply
    138,944.68x = 191,743.83 × 75,282.48
  4. Step 4: Simplify right side
    138,944.68x = 14,434,951,047.10
  5. Step 5: Solve for x
    x = 14,434,951,047.10/138,944.68
  6. Step 6: Final answer
    x = 103,889.92

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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.