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Finding the Fourth Proportional to 133,821.76, 184,647.84 and 79,363.84

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Solution

The fourth proportional to 133,821.76, 184,647.84 and 79,363.84 is: 109,506.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,821.76 : 184,647.84 = 79,363.84 : x
  2. Step 2: Convert to fraction form
    133,821.76/184,647.84 = 79,363.84/x
  3. Step 3: Cross multiply
    133,821.76x = 184,647.84 × 79,363.84
  4. Step 4: Simplify right side
    133,821.76x = 14,654,361,630.11
  5. Step 5: Solve for x
    x = 14,654,361,630.11/133,821.76
  6. Step 6: Final answer
    x = 109,506.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.