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Finding the Fourth Proportional to 125,840.39, 188,760.38 and 86,277.56

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Solution

The fourth proportional to 125,840.39, 188,760.38 and 86,277.56 is: 129,416.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,840.39 : 188,760.38 = 86,277.56 : x
  2. Step 2: Convert to fraction form
    125,840.39/188,760.38 = 86,277.56/x
  3. Step 3: Cross multiply
    125,840.39x = 188,760.38 × 86,277.56
  4. Step 4: Simplify right side
    125,840.39x = 16,285,783,635.88
  5. Step 5: Solve for x
    x = 16,285,783,635.88/125,840.39
  6. Step 6: Final answer
    x = 129,416.19

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1.5x scale

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.