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Finding the Fourth Proportional to 133,428.93, 184,101.78 and 79,703.43

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Solution

The fourth proportional to 133,428.93, 184,101.78 and 79,703.43 is: 109,972.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,428.93 : 184,101.78 = 79,703.43 : x
  2. Step 2: Convert to fraction form
    133,428.93/184,101.78 = 79,703.43/x
  3. Step 3: Cross multiply
    133,428.93x = 184,101.78 × 79,703.43
  4. Step 4: Simplify right side
    133,428.93x = 14,673,543,335.11
  5. Step 5: Solve for x
    x = 14,673,543,335.11/133,428.93
  6. Step 6: Final answer
    x = 109,972.73

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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.