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Finding the Fourth Proportional to 125,686.29, 188,529.48 and 36,939.81

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Solution

The fourth proportional to 125,686.29, 188,529.48 and 36,939.81 is: 55,409.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,686.29 : 188,529.48 = 36,939.81 : x
  2. Step 2: Convert to fraction form
    125,686.29/188,529.48 = 36,939.81/x
  3. Step 3: Cross multiply
    125,686.29x = 188,529.48 × 36,939.81
  4. Step 4: Simplify right side
    125,686.29x = 6,964,243,170.60
  5. Step 5: Solve for x
    x = 6,964,243,170.60/125,686.29
  6. Step 6: Final answer
    x = 55,409.73

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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.