Home / 138,944.43-191,742.66-75,282.21

Finding the Fourth Proportional to 138,944.43, 191,742.66 and 75,282.21

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Solution

The fourth proportional to 138,944.43, 191,742.66 and 75,282.21 is: 103,889.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,944.43 : 191,742.66 = 75,282.21 : x
  2. Step 2: Convert to fraction form
    138,944.43/191,742.66 = 75,282.21/x
  3. Step 3: Cross multiply
    138,944.43x = 191,742.66 × 75,282.21
  4. Step 4: Simplify right side
    138,944.43x = 14,434,811,196.08
  5. Step 5: Solve for x
    x = 14,434,811,196.08/138,944.43
  6. Step 6: Final answer
    x = 103,889.10

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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.