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Finding the Fourth Proportional to 128,994.34, 193,476.90 and 44,738.94

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Solution

The fourth proportional to 128,994.34, 193,476.90 and 44,738.94 is: 67,103.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,994.34 : 193,476.90 = 44,738.94 : x
  2. Step 2: Convert to fraction form
    128,994.34/193,476.90 = 44,738.94/x
  3. Step 3: Cross multiply
    128,994.34x = 193,476.90 × 44,738.94
  4. Step 4: Simplify right side
    128,994.34x = 8,655,951,420.49
  5. Step 5: Solve for x
    x = 8,655,951,420.49/128,994.34
  6. Step 6: Final answer
    x = 67,103.34

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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.