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Finding the Fourth Proportional to 125,039.18, 187,965.19 and 100,349.77

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Solution

The fourth proportional to 125,039.18, 187,965.19 and 100,349.77 is: 150,850.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,039.18 : 187,965.19 = 100,349.77 : x
  2. Step 2: Convert to fraction form
    125,039.18/187,965.19 = 100,349.77/x
  3. Step 3: Cross multiply
    125,039.18x = 187,965.19 × 100,349.77
  4. Step 4: Simplify right side
    125,039.18x = 18,862,263,584.51
  5. Step 5: Solve for x
    x = 18,862,263,584.51/125,039.18
  6. Step 6: Final answer
    x = 150,850.83

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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.