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Finding the Fourth Proportional to 128,991.33, 193,472.40 and 44,735.94

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Solution

The fourth proportional to 128,991.33, 193,472.40 and 44,735.94 is: 67,098.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,991.33 : 193,472.40 = 44,735.94 : x
  2. Step 2: Convert to fraction form
    128,991.33/193,472.40 = 44,735.94/x
  3. Step 3: Cross multiply
    128,991.33x = 193,472.40 × 44,735.94
  4. Step 4: Simplify right side
    128,991.33x = 8,655,169,678.06
  5. Step 5: Solve for x
    x = 8,655,169,678.06/128,991.33
  6. Step 6: Final answer
    x = 67,098.85

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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.