Home / 137,249.24-189,403.92-76,819.88

Finding the Fourth Proportional to 137,249.24, 189,403.92 and 76,819.88

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Solution

The fourth proportional to 137,249.24, 189,403.92 and 76,819.88 is: 106,011.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,249.24 : 189,403.92 = 76,819.88 : x
  2. Step 2: Convert to fraction form
    137,249.24/189,403.92 = 76,819.88/x
  3. Step 3: Cross multiply
    137,249.24x = 189,403.92 × 76,819.88
  4. Step 4: Simplify right side
    137,249.24x = 14,549,985,458.91
  5. Step 5: Solve for x
    x = 14,549,985,458.91/137,249.24
  6. Step 6: Final answer
    x = 106,011.41

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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.