Home / 138,429.05-207,660.86-54,178.32

Finding the Fourth Proportional to 138,429.05, 207,660.86 and 54,178.32

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Solution

The fourth proportional to 138,429.05, 207,660.86 and 54,178.32 is: 81,274.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,429.05 : 207,660.86 = 54,178.32 : x
  2. Step 2: Convert to fraction form
    138,429.05/207,660.86 = 54,178.32/x
  3. Step 3: Cross multiply
    138,429.05x = 207,660.86 × 54,178.32
  4. Step 4: Simplify right side
    138,429.05x = 11,250,716,372.22
  5. Step 5: Solve for x
    x = 11,250,716,372.22/138,429.05
  6. Step 6: Final answer
    x = 81,274.24

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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.