Home / 137,289.21-189,450.20-76,859.37

Finding the Fourth Proportional to 137,289.21, 189,450.20 and 76,859.37

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Solution

The fourth proportional to 137,289.21, 189,450.20 and 76,859.37 is: 106,060.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,289.21 : 189,450.20 = 76,859.37 : x
  2. Step 2: Convert to fraction form
    137,289.21/189,450.20 = 76,859.37/x
  3. Step 3: Cross multiply
    137,289.21x = 189,450.20 × 76,859.37
  4. Step 4: Simplify right side
    137,289.21x = 14,561,022,634.08
  5. Step 5: Solve for x
    x = 14,561,022,634.08/137,289.21
  6. Step 6: Final answer
    x = 106,060.94

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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.