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Finding the Fourth Proportional to 125,454.94, 187,936.37 and 72,753.71

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Solution

The fourth proportional to 125,454.94, 187,936.37 and 72,753.71 is: 108,987.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,454.94 : 187,936.37 = 72,753.71 : x
  2. Step 2: Convert to fraction form
    125,454.94/187,936.37 = 72,753.71/x
  3. Step 3: Cross multiply
    125,454.94x = 187,936.37 × 72,753.71
  4. Step 4: Simplify right side
    125,454.94x = 13,673,066,857.98
  5. Step 5: Solve for x
    x = 13,673,066,857.98/125,454.94
  6. Step 6: Final answer
    x = 108,987.87

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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.