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Finding the Fourth Proportional to 139,867.56, 192,886.92 and 92,037.87

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Solution

The fourth proportional to 139,867.56, 192,886.92 and 92,037.87 is: 126,926.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,867.56 : 192,886.92 = 92,037.87 : x
  2. Step 2: Convert to fraction form
    139,867.56/192,886.92 = 92,037.87/x
  3. Step 3: Cross multiply
    139,867.56x = 192,886.92 × 92,037.87
  4. Step 4: Simplify right side
    139,867.56x = 17,752,901,267.66
  5. Step 5: Solve for x
    x = 17,752,901,267.66/139,867.56
  6. Step 6: Final answer
    x = 126,926.51

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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.