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Finding the Fourth Proportional to 125,218.68, 187,828.04 and 75,867

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Solution

The fourth proportional to 125,218.68, 187,828.04 and 75,867 is: 113,800.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,218.68 : 187,828.04 = 75,867 : x
  2. Step 2: Convert to fraction form
    125,218.68/187,828.04 = 75,867/x
  3. Step 3: Cross multiply
    125,218.68x = 187,828.04 × 75,867
  4. Step 4: Simplify right side
    125,218.68x = 14,249,949,910.68
  5. Step 5: Solve for x
    x = 14,249,949,910.68/125,218.68
  6. Step 6: Final answer
    x = 113,800.51

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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.