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Finding the Fourth Proportional to 125,469.93, 187,958.85 and 72,768.72

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Solution

The fourth proportional to 125,469.93, 187,958.85 and 72,768.72 is: 109,010.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,469.93 : 187,958.85 = 72,768.72 : x
  2. Step 2: Convert to fraction form
    125,469.93/187,958.85 = 72,768.72/x
  3. Step 3: Cross multiply
    125,469.93x = 187,958.85 × 72,768.72
  4. Step 4: Simplify right side
    125,469.93x = 13,677,524,927.17
  5. Step 5: Solve for x
    x = 13,677,524,927.17/125,469.93
  6. Step 6: Final answer
    x = 109,010.38

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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.