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Finding the Fourth Proportional to 101,282.56, 139,584.32 and 67,230.88

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Solution

The fourth proportional to 101,282.56, 139,584.32 and 67,230.88 is: 92,655.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,282.56 : 139,584.32 = 67,230.88 : x
  2. Step 2: Convert to fraction form
    101,282.56/139,584.32 = 67,230.88/x
  3. Step 3: Cross multiply
    101,282.56x = 139,584.32 × 67,230.88
  4. Step 4: Simplify right side
    101,282.56x = 9,384,376,667.80
  5. Step 5: Solve for x
    x = 9,384,376,667.80/101,282.56
  6. Step 6: Final answer
    x = 92,655.41

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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.